(Species) Diploria is a monotypic genus of massive reef building stony corals in the family Mussidae.

[3][4][5][6] It is represented by a single species, Diploria labyrinthiformis, commonly known as grooved brain coral and is found in the western Atlantic Ocean and Caribbean Sea.

[10] Diploria labyrinthiformis can grow upward at a rate of approximately 3.5 millimeters per year, achieving about 2 metres (6.6 feet) in diameter.

Unlike most other Caribbean broadcast spawners, Diploria labyrinthiformis spawns over multiple months from the late spring until even mid-autumn.

[12] Diploria labyrinthiformis is found in tropical parts of the west Atlantic Ocean, the Gulf of Mexico, the Caribbean Sea, the southern tip of Florida, the Bahamas, Bermuda and the coasts of Central America.

[11] The coral also has a relationship with Diadema antillarum, the long-spined urchin, whose grazing helps to reduce the effects of shading, as well as the overgrowth of macroalgae.