ClipArt ETC
"Profile of the bottom of the Atlantic Ocean and adjoining land in New Jersey and Pennsylvania, showing the continental shelf." -Gilbert, 1910

Atlantic Shelf

"Profile of the bottom of the Atlantic Ocean and adjoining land in New Jersey and Pennsylvania, showing…

Section of a barrier reef.

Barrier Section

Section of a barrier reef.

A coral island developed from a submerged volcano or other rock.

Coral Island

A coral island developed from a submerged volcano or other rock.

A section of an actual coral reef, showing the formation: two sides tall, above sea level with the middle lower and submerged.

Coral Reef Section

A section of an actual coral reef, showing the formation: two sides tall, above sea level with the middle…

A terrace built by waves.

Terrace

A terrace built by waves.