Reef 2D: patch reef with coral cay and lagoon

Illustration of reef base with volcanic island and barrier reef

Illustration of reef base with volcanic island and fringing reef

Illustration of a 2D estuary with continental island and offshore reef

Illustration of reef base with rocky lagoon

As per Darwin's theory about the formation of coral atolls, this illustration shows the remaining coral atoll following subsidence of the original volcanic island.

Illustration of sand and reef habitat

Illustration of oyster 2D reef

Illustration of reef habitat