Lagoon

Illustration of a barrier island coast with microtidal, wave-dominated energy. The morphology shows an flood-tidal delta, recurved spit, washover fans, "wash-around", closed inlet, tidal inlets, tidal creeks, and saltmarsh

Illustration of coastline base with sand dune gradient from sea level to berm, frontal dune, outer barrier system, lagoon, and inner barrier system

Illustration of habitat base with intertidal mud

Illustration of habitat base with intertidal mudflat

Karst 3D: cenotes, sinkholes, and coastal lagoon

Illustration of closed and stratified lagoon base

Illustration of open lagoon base

Illustration of lagoon base with barrier sand islands

Side view of adult Yellow Goatfish

Illustration of patch reef base with coral cay and lagoon

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 map of Indian River in Florida, USA