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Sand lance
Sand lance
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Sand lances
Ammodytes hexapterus
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Labriformes
Suborder: Uranoscopoidei
Family: Ammodytidae
Bonaparte, 1832
Genera[1]

Ammodytes
Ammodytoides
Bleekeria
Gymnammodytes
Hyperoplus
Lepidammodytes
Protammodytes

A common tern with a sand lance, Biddeford Pool, ME - August 2013

A sand lance or sandlance is a ray-finned fish belonging to the family Ammodytidae. Several species of sand lances are commonly known as "sand eels", though they are not related to true eels. Another variant name is launce,[2] and all names of the fish are references to its slender body and pointed snout. The family name (and genus name, Ammodytes) means "sand burrower", which describes the sand lance's habit of burrowing into sand to avoid tidal currents.

Sand lances are most commonly encountered by fishermen in the North Pacific and North Atlantic, but are found in oceans throughout the world. These fish do not have pelvic fins and do not develop swim bladders, staying true to their bottom-dwelling habit as adults. Both adult and larval sea lances primarily feed on copepods. Larval forms of this fish are perhaps the most abundant of all fish larvae in areas such as the northwest Atlantic, serving as a major food item for cod, salmon, whales[3] and other commercially important species. As adults, sand lances are harvested commercially in some areas (primarily in Europe), leading to direct human competition with diving birds such as puffins, auks, terns, and cormorants. Some species are inshore coastal dwellers, and digging for sand lances to use as a bait fish has been a popular pastime in coastal areas of Europe and North America. Other species are deep-water dwellers, some of which have only recently been described to science, and most of which lack common names.

Ammodytes americanus
Ammodytes tobianus
Ammodytes dubius

Convergent evolution

[edit]

Sand lances have chameleon-like independent eye movements and special focusing lenses. These specialized eyes enhance the animals' prey capture ability as shown by their high success rates. Superficially, the swift strike of the sand lance resembles the "ballistic tongue" of chameleons. Sand lances and chameleons share other features.[4][5][6]

Timeline

[edit]
QuaternaryNeogenePaleogeneHolocenePleist.Plio.MioceneOligoceneEocenePaleoceneHyperoplusAmmodytesQuaternaryNeogenePaleogeneHolocenePleist.Plio.MioceneOligoceneEocenePaleocene

See also

[edit]

The sand lance has lent its name to two submarines of the United States Navy:

References

[edit]
[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Sand lance

View on Grokipedia
from Grokipedia
Sand lances are small, semipelagic, schooling marine fishes belonging to the family Ammodytidae, primarily in the genus Ammodytes, distinguished by their elongated, silvery, eel-like bodies, lack of a , and unique behavior of burrowing into coarse sandy substrates to evade predators and during periods of dormancy. These ray-finned fishes, often called sand eels, lack pelvic fins in most species and feature a protruding lower , a forked caudal , and minute scales embedded in thick skin; they typically reach lengths of 10–30 cm, with lifespans of 3–12 years and maturity at 1–3 years. Distributed across the Northern Hemisphere's temperate and coastal waters, sand lances inhabit shallow nearshore environments from intertidal zones to depths of about 100 m, preferring areas with suitable sandy or gravelly bottoms for burrowing; notable species include the Pacific sand lance (Ammodytes hexapterus) along North American and Asian Pacific coasts, the American sand lance (A. americanus) in the Northwest Atlantic from to , and the northern sand lance (A. dubius) in deeper offshore Atlantic waters up to . Their range spans the North Pacific (e.g., to the and ), North Atlantic (e.g., Newfoundland to , , and Mediterranean), and regions, with patchy and seasonally variable abundances influenced by substrate availability and hydrographic conditions. Ecologically, sand lances are quintessential fishes, serving as a primary prey for over 100 consumer species—including at least 40 birds (such as puffins, murres, and terns), 12 marine mammals (like seals and whales), 45 fishes (e.g., and ), and various —due to their high (5–7.9 kJ/g wet mass) and dense schooling behavior in the . They are and eurythermal, feeding mainly on like copepods and euphausiids during diurnal periods, while exhibiting seasonal spawning from late fall to early spring (–May), producing demersal adhesive eggs that hatch into larvae after 3–4 weeks. This pivotal role in food webs supports predator reproduction and survival, such as comprising 71–98% of some chick diets, though they can accumulate and transmit toxins like . Commercially, sand lances have been harvested extensively for fishmeal, feed, and human consumption, with historical catches reaching 300,000 tons annually in and over 1 million tons in the , though populations face threats from , habitat loss due to coastal development, and climate change impacts on sandy substrates. Recent assessments highlight their , particularly in regions like the Northwest Atlantic, where they underpin both commercial fisheries and protected , underscoring the need for ecosystem-based management.

Taxonomy and systematics

Classification and etymology

Sand lances are ray-finned fishes classified within the phylum Chordata, class , order Labriformes, and family Ammodytidae, which encompasses 7 genera and 34 species. The common name "sand lance" originates from the fishes' behavior of burrowing into sandy substrates and their slender, pointed body resembling a . The scientific genus name Ammodytes derives from the words ammos (sand) and dytēs (burrower or diver), reflecting this burrowing habit. Historically, the family Ammodytidae was placed within the order , but molecular phylogenetic analyses since 2017, including a proposed grouping with Uranoscopidae in Uranoscopiformes, have contributed to revisions; as of 2025, it is classified in the order Labriformes (suborder Uranoscopoidei), affirming its separation from other sand-dwelling families such as Trichodontidae.

Diversity and species

The family Ammodytidae encompasses approximately 34 of sand lances, primarily distributed across the genera Ammodytes, Hyperoplus, and Gymnammodytes, with additional species in genera such as Ammodytoides and Bleekeria. These genera reflect adaptations to temperate and marine environments, where species exhibit variations in body elongation and burrowing capabilities that facilitate survival in sandy substrates. Prominent species include the Pacific sand lance (Ammodytes hexapterus), which inhabits the North Pacific; the American sand lance (A. americanus) in the Northwest Atlantic; the northern sand lance (A. dubius) in offshore Atlantic regions; and the (A. tobianus) in the Northeast Atlantic. Other notable examples are the greater sand eel (Hyperoplus immaculatus) and the Mediterranean sand eel (Gymnammodytes cicerelus), which highlight regional diversity within their respective genera. These species represent key components of the family's , with Ammodytes alone accounting for at least eight recognized taxa. Distinctions among often involve meristic characters such as ray counts and scale patterns, which aid in taxonomic identification. For instance, A. hexapterus typically has 58–63 rays and 68 vertebrae, contrasting with 55–59 dorsal rays and 67 vertebrae in the closely related A. personatus. Similarly, A. tobianus features belly scales arranged in tight chevrons extending over the pectoral base, differing from the more scattered scales in A. marinus. Anal fin ray counts also vary, with higher numbers (e.g., 30–35) in some North Pacific species compared to 26–33 in Atlantic forms like A. americanus. These morphological traits, combined with genetic markers, underscore driven by geographic isolation across ocean basins, such as the separation between Pacific and Atlantic populations. Regionally important species include those significant in Arctic waters, such as A. dubius (northern sand lance) and populations of A. hexapterus (Pacific sand lance), which face heightened vulnerability from through shifts in body size, prey availability, and habitat suitability. These Arctic-associated forms exemplify how isolation in polar environments has fostered unique adaptations, though ongoing warming poses risks to their persistence.

Physical characteristics

Morphology and anatomy

Sand lances possess an elongated, subcylindrical body that tapers to a pointed , facilitating their streamlined form for navigating substrates. The mouth is small and terminal, with a protractile upper and a projecting lower featuring a strong symphyseal process adapted for substrate interaction. Pelvic fins are absent, while pectoral fins are reduced, consisting of 11–17 rays and positioned low on the body to minimize drag during movement. The body is covered in small, scales that are embedded within a thick cutaneous layer, often arranged in oblique rows along 106–198 dermal plicae below the , which aids in reducing friction. The is straight and unbranched but incomplete, with 106–185 pored scales, providing limited mechanosensory input suited to their . Internally, the skeletal structure includes 59–78 flexible vertebrae, with more abdominal than caudal elements, enabling undulatory wriggling motions. The gut is simple and relatively short, approximately 60% of standard length, optimized for processing prey through rapid ingestion and digestion. Sensory adaptations include large eyes positioned for enhanced detection in low-light conditions, with activity thresholds around 20–100 , supporting visual in dim environments. Olfactory organs are well-developed, aiding in the detection of chemical cues essential for schooling coordination among conspecifics.

Size, coloration, and adaptations

Sand lances exhibit considerable variation in size across and life stages, with adults typically reaching maturity at lengths of 7 to 20 cm (3 to 8 inches). Maximum recorded lengths can extend to 25 cm in certain , such as Ammodytes hexapterus and A. tobianus, while newly hatched larvae measure less than 1 cm, often around 3 to 5 mm. These dimensions reflect adaptations to a pelagic during early development and a more benthic-oriented existence in adulthood, where smaller sizes facilitate rapid maneuvers in sandy substrates. The coloration of sand lances is characterized by a translucent or silvery body that enhances against marine backgrounds, featuring a darker dorsal surface ranging from metallic blue to greenish-brown and a lighter, silvery-white ventral side. This pattern reduces visibility from above and below in the , aiding predator avoidance during schooling and foraging. When disturbed, some individuals display transient reddish-yellow hues, potentially serving as a . Key adaptations enable sand lances to thrive in dynamic coastal environments, particularly their ability to rapidly into sandy substrates for refuge and overwintering. Powerful tail musculature powers undulatory thrusts that propel the elongate body headfirst into at speeds sufficient for evasion, with fused scale bands minimizing during entry. Additionally, they tolerate low oxygen conditions while buried through reduced metabolic rates and reliance on anaerobic metabolism, as evidenced by elevated routine blood lactate levels and oxygen-independent respiration down to critical thresholds of approximately 16 to 30 . These traits, including eurythermal and tolerances, allow prolonged burial in hypoxic interstitial waters without a swim bladder to complicate submersion.

Behavior and life history

Daily and seasonal behaviors

Sand lance display a distinct diurnal cycle, emerging from sandy substrates at dawn to form large schools and feed primarily on in the throughout the day. This activity occurs in nearshore waters, where they pursue prey such as copepods and other small , contributing to their as key energy transfer species in marine ecosystems. At or during periods of low light, they retreat by burrowing headfirst into the , a process that typically completes in approximately 1 second for an individual . Schooling behavior is central to their daily routines, with sand lance forming dense, aligned groups that enhance predator avoidance through coordinated movement. When threatened, such as by , schools often contract into tight, swirling balls to confuse attackers and facilitate escape. This polarization allows rapid directional changes, minimizing individual risk while maintaining group cohesion during feeding or evasion. On a seasonal scale, sand lance exhibit limited inshore-offshore movements, primarily associated with spawning in fall, while maintaining high site fidelity to nearshore habitats influenced by water temperature. In colder periods, particularly fall and winter, they remain buried in nearshore sands for overwintering, entering extended to conserve energy amid reduced temperatures and prey availability. This burrowing phase can last several months, with relying on reserves until spring emergence. Behaviors such as movements and can vary by (e.g., northern vs. Pacific populations) and region. In response to immediate threats, sand lance execute rapid dives into the substrate, using their elongate bodies and undulatory motions to penetrate sand quickly and evade predators. This escape mechanism is most effective in suitable sandy habitats, allowing the fish to disappear from view almost instantaneously.

Reproduction and development

Sand lances exhibit batch spawning, typically occurring in dense aggregations during late fall, winter, or early spring, with females releasing multiple batches of demersal, slightly eggs over sandy or gravelly substrates in the intertidal or shallow subtidal zones. varies by and body size, with females producing 1,400 to 16,000 eggs per spawning event in Pacific sand lance (Ammodytes hexapterus), proportional to length. There is no following egg deposition, and eggs adhere lightly to the substrate before being covered by sand or . Fertilization is external, occurring as males and females closely together during spawning, broadcasting gametes over the substrate in vigorous, synchronized releases that leave scoured pits in the . Egg development is temperature-dependent, with incubation lasting 19 to 36 days at 6–11°C in lesser sandeel (Ammodytes marinus), or up to 67 days under colder intertidal conditions in Pacific sand lance, often enduring exposure to air and subfreezing temperatures. Upon , larvae measure approximately 5 mm in length and are nearly transparent, entering a pelagic stage where they feed primarily on , nauplii, and early for 1–3 months. During this period, larvae grow rapidly before metamorphosing into juveniles, developing scales and shifting to a more benthic lifestyle. Spawning timing and development can vary by and region, such as earlier in northern populations. Sand lances reach at 1–2 years of age, with most individuals spawning in their second year; males often mature slightly earlier than females, though both participate in subsequent seasons if they survive beyond age 2.

Distribution and habitat

Geographic range

Sand lances of the genus Ammodytes are confined to temperate and marine waters of the , primarily in the North Atlantic, North Pacific, and Oceans, with no recorded presence in the . This distribution reflects their adaptation to cold, coastal environments where they form dense schools in shallow, sandy substrates. In the Atlantic Ocean, A. americanus and A. dubius occupy the western North Atlantic, ranging from and southern southward to , often in large offshore and inshore populations. In the Northeast Atlantic, A. tobianus extends from , , and the south to , encompassing , the , and the , though reports from the Mediterranean are considered misidentifications. The Pacific hosts several species, with A. hexapterus distributed in the northern and western North Pacific from the Soya Strait off , , through the and to the and . A. personatus occurs in the Northeast Pacific, from the western through the to . A. heian is restricted to coastal . Following the , sand lance populations in northern latitudes recolonized post-glacial habitats, contributing to genetic homogeneity across expansive regions such as from the to for A. dubius. This recolonization pattern is evident in the broad, continuous distributions observed today, facilitated by larval drift and ocean currents.

Habitat requirements and preferences

Sand lance species, such as the Pacific sand lance (Ammodytes hexapterus) and northern sand lance (A. dubius), are obligate that depend on specific substrate compositions for , resting, and predator avoidance. They require well-sorted, coarse with grain sizes ranging from 0.2 to 2 mm, showing a strong preference for 0.50–1.00 mm particles that allow efficient burrowing without excessive compaction or instability. Substrates must be free of , (typically <10% content), or , as finer sediments impede movement and coarser ones hinder penetration, limiting suitability to clean, dynamic sandy environments. These fish inhabit shallow coastal waters, generally at depths of 5 to 50 m, where they can access both surface waters for feeding and benthic substrates for burial. Water temperatures in preferred habitats range from 1 to 11°C, aligning with cold-temperate conditions that support their metabolic needs and prey availability. While they thrive in well-oxygenated environments, sand lance exhibit tolerance to hypoxia during burial periods, facilitated by their lack of a and physiological adaptations for low-oxygen endurance. Microhabitats favored by sand lance include sandy beaches, enclosed bays, and subtidal zones, particularly in wave-exposed areas that maintain substrate cleanliness through natural sediment transport and sustain high zooplankton densities for foraging. These locations provide a balance of shelter and productivity, with wave action preventing silt accumulation while promoting nutrient upwelling. Within broader geographic ranges across North Atlantic and Pacific basins, such microhabitats determine local population densities. Habitat loss poses a significant to sand lance, primarily through urban development activities like shoreline armoring, dredging, and construction that alter sediment composition and reduce available coarse sand areas. Recent assessments (as of 2024) highlight potential declines in Pacific sand lance populations due to effects on ocean temperatures and substrate stability, particularly in the . These modifications compact or contaminate substrates, diminishing burrowing suitability and fragmenting essential nearshore ecosystems.

Ecological significance

Role as prey in food webs

Sand lances serve as a vital in marine food webs, characterized by their high content that delivers substantial to predators. Young-of-the-year individuals can accumulate up to 35% of their dry body weight, while older fish range from 14% to 35%, enabling efficient transfer during critical feeding periods for higher trophic levels. This nutritional profile, with energy densities reaching 5.7 kJ/g wet mass in larger specimens, positions sand lances as a preferred prey item over lower-energy alternatives. As secondary consumers, sand lances primarily feed on such as copepods, linking to top predators and fulfilling a keystone role in across ecosystems. Their annual , estimated at around 1 million metric tons (based on early modeling) for Pacific sand lance in the alone, sustains predator consumption on scales of hundreds of thousands to millions of tons regionally, supporting breeding success and population stability for dependent species. Over 70 predator species have been documented in the Northwest Atlantic, including at least 45 fishes, 16 seabirds, 9 marine mammals, and 2 squids, with broader tallies exceeding 100 species across the . Key predators encompass seabirds like Atlantic puffins (Fratercula arctica) and common terns (Sterna hirundo), marine mammals such as grey seals (Halichoerus grypus) and humpback whales (Megaptera novaeangliae), and fishes including (Gadus morhua) and (Oncorhynchus tshawytscha). In specific hotspots, sand lance abundance drives pronounced predator aggregations, underscoring their ecosystem centrality. At Stellwagen Bank in the , northern sand lance (Ammodytes dubius) exhibit high spatial overlap (collocation indices of 0.64–0.99) with protected species like humpback whales and great shearwaters (Ardenna gravis), particularly in the southwest sector, where densities support foraging concentrations during spring, summer, and fall. Similarly, in , Pacific sand lance (A. personatus) form dense populations exceeding 60 million individuals in the San Juan Channel sand wave field at depths of 20–80 meters, serving as essential prey for local , (Ophiodon elongatus), seabirds, and marine mammals. These concentrations highlight sand lances' role in sustaining and fisheries productivity in coastal environments.

Population dynamics and environmental influences

Sand lance populations exhibit pronounced boom-bust cycles, with abundance fluctuating widely over seasonal, annual, and decadal scales due to their schooling and environmental sensitivities. In prime subtidal and intertidal habitats, such as sandy substrates in the and , densities can reach up to 200 individuals per m². These patterns reflect density-dependent regulation, where high abundances support rapid growth but also increase vulnerability to predation and . Several environmental factors drive these dynamics. Climate variability, including warmer ocean temperatures associated with events like El Niño, reduces recruitment by altering prey availability, leading to poorer larval survival and lower year-class strength in the Northeast Pacific. Ocean warming during marine heatwaves has caused significant declines in body condition and overall abundance, as seen in the where prolonged warm conditions diminished nutritional quality and overwinter survival. poses a direct threat to early life stages, with elevated CO₂ levels impairing embryo hatching success and larval development in species like Ammodytes dubius, potentially reducing population replenishment in acidifying waters. Fishing bycatch, though relatively low compared to targeted fisheries, contributes to localized mortality, particularly in trawl operations overlapping with sand lance habitats. A 2024 threat assessment projects that Pacific sand lance populations in the could decline by 37% relative to current levels due to and coastal development. Monitoring efforts rely on fisheries-independent surveys to track these changes accurately. Video trawls and ichthyoplankton sampling have documented and larval transport from key habitats, providing baselines for abundance indices without gear biases associated with . Sand lance serve as ecological sentinels through , where δ¹³C and δ¹⁵N ratios in their tissues reveal shifts in trophic structure and , such as responses to prey alterations or . These methods highlight their role in indicating broader marine environmental changes. Regionally, trends vary markedly. In the Northeast Pacific, populations have declined due to ongoing warming, with projections indicating further reductions in abundance linked to shifting and reduced accumulation. In contrast, parts of the Northwest Atlantic show more stable patterns, with historical increases in abundance during cooler periods and less pronounced declines despite regional warming, though vulnerabilities to prey shifts persist.

Evolutionary history

Fossil record and timeline

The fossil record of sand lances (family Ammodytidae) extends back to the Eocene epoch, approximately 50 million years ago, when primitive otoliths representing early members of the family were preserved in marine deposits of the North Atlantic region, including the sables coquillers du Bois-Gouët formation in , . These otoliths, characterized by their distinctive morphology indicative of elongate, burrowing teleosts, mark the initial appearance of Ammodytidae in temperate coastal environments during a period of relatively warm global climates. Skeletal remains of Ammodytidae first appear in the epoch, with fossils including disarticulated bones and vertebrae reported from various European localities such as and , suggesting the family's transition to more diverse body forms adapted for sediment burrowing. By the epoch, around 20 million years ago, the group underwent significant diversification, with multiple genera and species documented across the Mediterranean and basins, coinciding with Miocene cooling trends that promoted the expansion of cooler, sandy marine habitats suitable for their lifestyle. Notable examples include the upper Miocene species Gymnammodytes oranensis from diatomite deposits near , , and abundant otoliths of Ammodytinae in the , reflecting increased and northward range shifts. Key fossil evidence consists primarily of otoliths—hardened ear stones that preserve well in anoxic sediments—along with scattered scales and skeletal fragments recovered from sedimentary cores in paleoenvironments dominated by fine sands and silts. These remains, such as otoliths from the Basin showing sulcal patterns adapted for benthic life, demonstrate the family's long-standing specialization for burrowing into sandy substrates to evade predators and overwinter, a trait evident even in ancient coastal and shelf settings. and Pleistocene deposits further reveal continuity, with otoliths of extant-like species in formations like the Yorktown Formation in and the Palos Verdes Sand in . Throughout the Pleistocene epoch, Ammodytidae endured repeated glacial-interglacial cycles, as evidenced by assemblages in marine sediments across the North Atlantic and eastern Pacific margins, indicating survival in unglaciated southern refugia during peak ice ages. Following the , around 10,000 years ago, fossil and modern distributions suggest a rapid post-glacial expansion into higher latitudes, recolonizing deglaciated shelf areas with suitable sandy habitats as sea levels stabilized and temperatures rose.

Convergent evolution with other taxa

Sand lances (family Ammodytidae) exhibit similar adaptations to distantly related taxa, particularly in their elongate body morphology and behaviors associated with sand burrowing and schooling, as responses to similar environmental pressures in coastal marine habitats. These traits have arisen independently in multiple lineages, enabling rapid burial in sandy substrates for predator avoidance and during periods of . Notable examples include the Trichodontidae (sandfishes, such as the Pacific sandfish Trichodon trichodon) and Uranoscopidae (stargazers), which share analogous elongate, slender bodies lacking swim bladders, facilitating efficient penetration into sand. The Pacific sandfish, for instance, displays a streamlined morphology closely resembling that of Ammodytes species, with juveniles and larvae exhibiting schooling behavior that mirrors the pelagic aggregations of sand lances for foraging and anti-predator defense. Stargazers, meanwhile, partially bury their bodies in sand as predators, paralleling the burrowing refuge strategy despite differing in overall ecology. This is driven primarily by selective pressures from high predation risk in exposed coastal environments, where burrowing provides immediate shelter, and by the availability of unconsolidated sandy substrates that support quick entry and exit. Sand lances can burrow in approximately 1 second, a capability paralleled in sandfishes through similar axial undulations and head-first propulsion. Such similarities underscore the within marine sandy habitats, where distantly related percomorph fishes have repeatedly specialized in these niches, diversifying ecological roles while exploiting common antipredator and habitat utilization strategies.

References

  1. https://www.fs.usda.gov/pnw/pubs/pnw_rp521.pdf
  2. https://onlinelibrary.wiley.com/doi/10.1111/faf.12445
  3. https://www.usgs.gov/programs/cmhrp/news/quintessential-forage-fish-understanding-crucial-role-sand-lance
  4. https://www.fishbase.se/summary/FamilySummary.php?ID=402
  5. https://www.calacademy.org/eschmeyers-catalog-of-fishes-classification
  6. https://www.merriam-webster.com/dictionary/Ammodytes
  7. https://bmcecolevol.biomedcentral.com/articles/10.1186/s12862-017-0958-3
  8. https://www.fishbase.se/summary/Ammodytes-hexapterus.html
  9. https://zookeys.pensoft.net/article/8866/
  10. https://pmc.ncbi.nlm.nih.gov/articles/PMC5027774/
  11. https://spo.nmfs.noaa.gov/sites/default/files/orr.pdf
  12. https://wildlife.org/tws2021-climate-change-may-shift-seal-prey-in-arctic/
  13. https://academic.oup.com/icesjms/article/78/3/1023/6120244
  14. https://www.adfg.alaska.gov/static/species/speciesinfo/_aknhp/PacificSandLance.pdf
  15. https://www.boem.gov/newsroom/ocean-science-news/sand-lance
  16. https://www.researchgate.net/publication/307257799_Burrowing_behavior_habitat_and_functional_morphology_of_the_Pacific_sand_lance_Ammodytes_personatus
  17. https://www.sciencedirect.com/science/article/pii/0300962991905806
  18. https://www.abdn.ac.uk/staffpages/uploads/nhi635/vanderKooijetal2008JSR.pdf
  19. https://journals.biologists.com/jeb/article/214/4/657/10720/Locomotory-transition-from-water-to-sand-and-its
  20. https://www2.clark.wa.gov/files/dept/community-planning/shoreline-master-program/proposal-comments-received/futurewise-cd-1/fish-&-wildlife-habitat/forage-fish/wdfw----wa-state-forage-fish-sand-lance.htm
  21. https://njscuba.net/marine-biology/marine-fishes/baitfishes/sand-lance/
  22. https://www.int-res.com/articles/meps_oa/m14257_advview.pdf
  23. https://www.sciencedirect.com/science/article/abs/pii/S0376635725000312
  24. https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1095-8649.1999.tb00857.x
  25. https://pubs.usgs.gov/publication/70184249
  26. https://www.sciencedirect.com/science/article/abs/pii/S1385110117302538
  27. https://onlinelibrary.wiley.com/doi/10.1111/fog.12580
  28. https://onlinelibrary.wiley.com/doi/10.1111/jai.13981
  29. https://www.fishbase.se/summary/Ammodytes-dubius
  30. https://www.fishbase.se/summary/Ammodytes-tobianus.html
  31. https://www.researchgate.net/figure/Distribution-of-species-of-Ammodytes-of-the-North-Pacific-region-based-on-material_fig1_277003726
  32. https://www.fishbase.se/summary/Ammodytes-personatus.html
  33. https://www.fishbase.se/summary/Ammodytes-heian.html
  34. https://academic.oup.com/icesjms/article/80/1/122/6872753
  35. https://www.sciencedirect.com/science/article/abs/pii/S0141113624004392
  36. https://www.researchgate.net/publication/232693857_Habitat_use_and_behavior_of_the_Pacific_sand_lance_Ammodytes_hexapterus_in_the_shallow_subtidal_region_of_southwestern_Vancouver_Island
  37. https://www.sciencedirect.com/science/article/abs/pii/S0079661113000803
  38. https://wdfw.wa.gov/sites/default/files/publications/00803/8_cumulative_impacts_2009-03-25.pdf
  39. https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2024.1445215/full
  40. https://repository.library.noaa.gov/view/noaa/36746/noaa_36746_DS1.pdf
  41. http://osu-wams-blogs-uploads.s3.amazonaws.com/blogs.dir/2849/files/2017/03/Anthony_et_al_2000.pdf
  42. https://apps-afsc.fisheries.noaa.gov/refm/docs/2003/GOAappendixA.pdf
  43. https://conbio.onlinelibrary.wiley.com/doi/10.1111/csp2.274
  44. https://www.usgs.gov/news/evaluating-stability-deep-water-sands-provide-habitat-pacific-sand-lance-critical-forage-fish
  45. https://www.sciencedirect.com/science/article/abs/pii/S0165783600002137
  46. https://www.int-res.com/articles/meps_oa/m613p171.pdf
  47. https://www.us-ocb.org/sand-lance-embryos-sensitivity-future-co2/
  48. https://www.sciencedirect.com/science/article/abs/pii/S016578362300139X
  49. https://repository.library.noaa.gov/view/noaa/31566/noaa_31566_DS1.pdf
  50. https://repository.library.noaa.gov/view/noaa/37513/noaa_37513_DS1.pdf
  51. https://www.researchgate.net/publication/242777617_Biology_and_Population_Changes_of_Northern_Sand_Lance_Ammodytes_dubius_from_the_Gulf_of_Maine_to_the_Middle_Atlantic_Bight
  52. https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2004n2a5.pdf
  53. https://www.academia.edu/7863911/The_Otoliths_from_the_Miocene_of_the_North_Sea_Basin
  54. https://repository.si.edu/bitstream/handle/10088/117173/part352155.pdf?sequence=1&isAllowed=y
  55. https://zenodo.org/records/5374490
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