Osprey Reef

Osprey Reef is a submerged atoll in the Coral Sea, northeast of Queensland, Australia.

The almost vertical reef walls, which rise from a depth of about 2,000 metres (6,600 ft), are home to a dwarf form of Nautilus pompilius that is isolated from other nautilus populations by more than 100 kilometres (62 mi).

[1][2][4] Schindleria brevipinguis, one of the world's smallest fish, is found in the Osprey Reef lagoon.

The reef is protected within the Coral Sea Commonwealth Marine Reserve.

[7] A 2009 expedition aimed to make discoveries in the deeper parts of the reef between 92 and 800 metres (302 and 2,625 ft) below sea level.

Bathymetric map of Osprey Reef, showing its location around 110 kilometres (68 mi) from the northern part of the Great Barrier Reef
Acropora coral garden with giant clam at Raging Horn, Osprey Reef
Osprey Reef from the air, showing nautilus detection sites used in a 1998–2008 study by Dunstan et al. [ 1 ]