Reef 3D: volcanic island with barrier reef 1

Illustration of volcanic islands with reefs

Illustration of a volcanic island with barrier reef

Illustration of reef habitat

Illustration of reef base with volcanic island and fringing reef

Illustration of sand and reef habitat

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.

A generic volcanic island with crater, lava flows, beach, and reef, that you can add to any diagram

Illustration of a 3D coastline showing mountains to open ocean