Daedalus Reef (Arabic: أبو قيزان, romanized: Abu Kizan) is an isolated oceanic coral reef in the Egyptian Red Sea, located approximately 90 kilometres (56 mi) east of Marsa Alam and about 100 kilometres (62 mi) south-east of Hurghada, at coordinates 24°55′24″N 35°51′30″E. The reef rises from a water depth of approximately 550 metres (1,800 ft) and its surface platform measures roughly 1,075 metres (3,527 ft) in length by 300 metres (984 ft) in width, bordered on all sides by near-vertical walls with dense coral growth. At its northern tip stands the operational Daedalus Reef Lighthouse, first constructed in 1863 and rebuilt in 1931.

The reef is part of Egypt's Red Sea marine protected area network, governed by a legal framework founded on Law No. 102 of 1983 and most recently reinforced by Prime Minister's Decree No. 4419 of 2025, which designated the entire Great Fringing Reef of the Red Sea as a marine protected area. Daedalus Reef is internationally recognised for its pelagic marine biodiversity and is considered one of the premier shark-observation sites in the Red Sea, with up to eight species documented through systematic underwater surveys.

Daedalus Reef lies in the offshore Egyptian Red Sea, well beyond the continental coastline of the Red Sea Governorate, making it one of the most remote navigational landmarks in the southern Red Sea shipping lanes. Its oceanic isolation, combined with exposure to prevailing Red Sea currents, defines both its ecological character and its significance as a navigational hazard.

The reef is recorded in the official navigation registers of the United Kingdom Hydrographic Office (UKHO) under the identifier Admiralty D7296 (also referenced as D7296.1, formerly E6048), and in the United States National Geospatial-Intelligence Agency (NGA) register as NGA 30492. These designations constitute the canonical international references for the lighthouse marking the reef and are the identifiers used in the mandatory aids-to-navigation publications for professional seafarers.

The reef platform rises from a seabed at approximately 550 m (1,800 ft) depth. Its surface measures approximately 1,075 m × 300 m (3,527 ft × 984 ft), with edges that drop in sheer walls and steep slopes. The interaction between its bathymetry, open-ocean exposure and upwelling currents accounts for both its exceptional ecological productivity and its reputation among technical and recreational divers.

The Daedalus Reef Lighthouse — also known as Abu Kizan Lighthouse — is an active aid to navigation that has been in continuous operation since 1863. Its construction history reflects the strategic interest of nineteenth-century European powers in marking Red Sea routes in the context of the opening of the Suez Canal (1869).

The original tower was erected in 1863 under British initiative and financing. It was a conical cast-iron structure approximately 18 metres (59 ft) tall, painted red, equipped with a jetty of approximately 100 metres (328 ft) to allow sea access. The original optic was a second-order fixed lens manufactured by the British firm Chance Brothers.

In 1931 the original tower was demolished and replaced by the current structure, built by the French company Barbier, Bénard et Turenne over a construction period of approximately one year and four months. The new stone tower was built on the original foundations and stands 30 metres (98 ft) tall. The reconstruction included a new jetty equipped with a railway track for materials transport. In 1993 the lighthouse underwent a maintenance and refurbishment programme.