Editing Coral Sea Islands (section)

===Northwestern Group===
# [[Osprey Reef]] (submerged atoll roughly oval in shape, measuring {{convert|25|by|12|km|mi|abbr=off}}, covering around {{convert|195|km2|sqmi|abbr=off}}, with lagoon up to {{convert|30|m|ft|abbr=off}} deep)
# Shark Reef (small elongated submerged reef {{convert|15|km|mi|abbr=off}} south of Osprey Reef, with a minimum depth of {{convert|7.8|m|ft|1|abbr=off}})
# Bougainville Reef (small submerged atoll, {{convert|2.5|by|4|km|mi|1|abbr=off}}, area {{convert|8|km2|sqmi|abbr=off}} with lagoon, dries at half tide)
# East Holmes Reef (submerged atoll, about {{convert|14|by|10|km|mi|abbr=off}}, area {{convert|125|km2|sqmi|abbr=off}} with lagoon)
# West Holmes Reef (submerged atoll {{convert|6|km|mi|abbr=off}} east of East Holmes Reef, about {{convert|18|by|7|km|mi|abbr=off}}, area {{convert|125|km2|sqmi|abbr=off}} with lagoon that is open on the West side, two small cays)
# Flora Reef (small submerged atoll, 5 by 4&nbsp;km, about {{convert|12|km2|sqmi|abbr=off}})
# Diane Bank (sunken atoll, depths of less than 10 m over an area of 65 by 25&nbsp;km, or {{convert|1300|km2|sqmi|abbr=off}}, along the northern edge 3 m deep, with Sand Cay in the Northwest, 3 m high)
# North Moore Reef (small submerged atoll, 4 by 3&nbsp;km, area {{convert|8|km2|sqmi|abbr=off}} including lagoon that is open on the Northwest side)
# South Moore Reef (small submerged reef 5&nbsp;km South of North Moore Reef)
# [[Willis Island (Coral Sea)|Willis Islets]] (sunken atoll, bank 45 by 19&nbsp;km, bank area more than {{convert|500|km2|sqmi|abbr=off}}, 3 islets on the Northwestern side: North Cay, Mid Islet almost 8 m high, South Islet or Willis Island 10 m high)
# Magdelaine Cays & Coringa Islets (one large, partially sunken atoll structure, almost 90 by 30&nbsp;km, bank area about {{convert|1500|km2|sqmi|abbr=off}}), 2 islets of the Magdelaine Cays in the North: North West Islet (area approximately {{convert|0.2|km2|sqmi|1|abbr=off}}) and South East Cay (area {{convert|0.37|km2|sqmi|abbr=off}}); 2 islets of the Coringa Islets 50 to 60&nbsp;km further Southwest: Southwest Islet or Coringa Islet (area 0.173&nbsp;km<sup>2</sup>), and Chilcott Islet (area 0.163&nbsp;km<sup>2</sup>)
# Herald Cays, Northeast Cay (encircled by a reef of 3 by 3&nbsp;km, total area 6&nbsp;km<sup>2</sup>, land area 0.34&nbsp;km<sup>2</sup>)
# Herald Cays, Southwest Cay (4&nbsp;km Southwest of Northeast Cay, encircled by a reef of 2 by 2&nbsp;km, total area 3&nbsp;km<sup>2</sup>, land area 0.188&nbsp;km<sup>2</sup>)
# Lihou Reef and Cays (largest atoll in the coral sea, with a size of 2500&nbsp;km<sup>2</sup>, land area 0.91&nbsp;km<sup>2</sup>)
# Diamond Islets & Tregosse Reefs (large, partially sunken atoll, 100 by 52&nbsp;km, area of the bank over 3000&nbsp;km<sup>2</sup>, with 4 islets and 2 small submerged reefs in the Northeast and Southeast: West Diamond Islet, Central Diamond Islet, East Diamond Islet on the Northeastern rim of the former atoll, and South Diamond Islet, East Tregosse Reef and West Tregosse Reef on the Southern rim)
# [[Flinders Reef (Coral Sea)|North Flinders Reef]] (large atoll, 34 by 23&nbsp;km, area 600&nbsp;km<sup>2</sup>, with 2 islets, Flinders Cay being the larger one with a length of 200 m and a height of 3 m)
# [[Flinders Reef (Coral Sea)|South Flinders Reef]] (atoll, 15 by 5&nbsp;km, 60&nbsp;km<sup>2</sup>)
# Herald's Surprise (small submerged reef North of Flinders Reefs, 3 by 2&nbsp;km)
# Dart Reef (small submerged reef Northwest of Flinders Reefs, 3 by 3&nbsp;km, area 6&nbsp;km<sup>2</sup> including small lagoon that is open to the North)
# Malay Reef (small submerged reef, not clearly defined, no breakers, difficult to see)
# Abington Reef (submerged reef, nearly awash, 4 by 2.5&nbsp;km, area 7&nbsp;km<sup>2</sup>)
# Marion Reef (Large circular atoll formation that is composed of three main units located on the Eastern side: Marion, Long and Wansfell; and a number of smaller reefs on the west. The formation sits atop a submarine feature known as the '''Marion Plateau''' which is separated from the larger Coral Sea Plateau to the north by the '''Townsville Trough'''. Three small sand cays are located on the eastern side of Marion Reef: Paget Cay, on Long Reef, Carola Cay, south of Long Reef, and Brodie Cay, on Wansfell Reef.)
[[File:Carcharhinus amblyrhynchos 1.jpg|thumb|A pair of Grey Reef Sharks (''Carcharhinus amblyrhynchos'') and divers in blue water. North Horn, Coral Sea Islands]]
The atolls of the Northwestern Group, except Osprey Reef and Shark Reef in the north, and Marion Reef in the south, are located on the '''Coral Sea Plateau''' (Queensland Plateau), a contiguous area of depths less than 1000 m.

* '''[[Flinders Reef (Coral Sea)|Flinders Reefs]]''' (North and South), '''Herald's Surprise''' and '''Dart Reef''' form a cluster of reefs of 66 by 26&nbsp;km.
* '''Magdelaine Cays''', '''Coringa Islets''' and '''Herald Cays''' are part of the 8856&nbsp;km<sup>2</sup> [[Coringa-Herald National Nature Reserve]], created on 16 August 1982 and located around 400&nbsp;km east of [[Cairns]] and 220 to 320&nbsp;km from the outer edge of the Great Barrier Reef. The 6 islets of the nature reserve have areas from 0.16 to 0.37&nbsp;km<sup>2</sup>, for a total of 1.24&nbsp;km<sup>2</sup>.
* '''[[Lihou Reef National Nature Reserve|Lihou Reef]]''' was declared a Nature Reserve on 16 August 1982, with an area of 8440&nbsp;km<sup>2</sup>.

The Nature Reserves were created to protect wildlife in the respective areas of the territory; together they form the [[Coral Sea Reserves Ramsar Site]].