information:classification, stylistic:tone
Extent

While the Great Barrier Reef with its islands and cays belong to Queensland, most reefs and islets east of it are part of the Coral Sea Islands Territory. In addition, some islands west of and belonging to New Caledonia are also part of the Coral Sea Islands in a geographical sense, such as the Chesterfield Islands and Bellona Reefs.

The International Hydrographic Organization defines the limits of the Coral Sea as follows:

On the North. The South coast of New Guinea from the entrance to the Bensbach River (141°01'E) to Gadogadoa Island near its Southeastern extreme (10°38′S 150°34′E / 10.633°S 150.567°E), down this meridian to the 100 fathom line and thence along the Southern edges of Uluma Reef and those extending to the Eastward as far as the Southeast point of Lawik Reef (11°43.5′S 153°56.5′E / 11.7250°S 153.9417°E) off Tagula Island, thence a line to the Southern extreme of Rennell Island (Solomon Islands) and from its Eastern point to Cape Surville, the Eastern extreme of San Cristobal Island, Solomons; thence through Nupani Island, the Northwestern of the Santa Cruz Islands (10°04.5′S 165°40.5′E / 10.0750°S 165.6750°E) to the Northernmost Island of the Duff Islands (9°48.5′S 167°06′E / 9.8083°S 167.100°E).

On the Northeast. From the Northernmost island of the Duff Islands, through these islands to their Southeastern extreme, thence a line to Méré Lava, Vanuatu Islands(14°25′S 163°03′E / 14.417°S 163.050°E) and down the Eastern coasts of the islands of this Group to Anatom Island (20°11′S 169°51′E / 20.183°S 169.850°E) in such a way that all the islands of these Groups, and the straits separating them, are included in the Coral Sea.

On the Southeast. A line from the Southeastern extreme of Anatom Island to Nokanhoui (reefs) (22°46′S 167°34′E / 22.767°S 167.567°E) off the Southeast extreme of New Caledonia, thence through the East point of Middleton Reef to the Eastern extreme of Elizabeth Reef (29°55′S 159°02′E / 29.917°S 159.033°E) and down this meridian to Latitude 30° South.

On the South. The parallel of 30° South to the Australian coast. (Bordering the Tasman Sea.)

On the West. The Eastern limit of the Arafura Sea and the East Coast of Australia as far south as Latitude 30° South.