Reef 2D: exposed

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

Illustration of coastline base gradient from deep reef to shallow reef, exposed sand, protected sand, and estuary

Illustration of 2-dimensional coastline base of a closed estuary with nearshore reefs

Illustration of a 2D coastline with saltwedge

Illustration of sand and reef habitat

Illustration of habitat base with exposed sand and calcareous sediment base

Illustration of a 2D coastline with sea-level rise and increased swell

Illustration of a 2D coastline indicating sea-level rise with continental shelf