Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Donate Shop PBS Search PBS

NOVA Online (click here for NOVA home)
Garden of Eden
Build an Atoll
Page 2 | Next page

Build an Atoll (2)

A coral reef appears along the island's shore. The reef surface is made of living coral polyps, tiny animals that bear limestone shells. The polyps gather food from the ocean with fingerlike tentacles.

Coral polyps can grow on any solid surface, including the skeletal remains of other polyps. A coral reef is actually a ridge comprised of the limestone remains of dead coral, covered by a thin layer of living coral.

Previous page | Next page


Seychelles Through Time | Saving the Magpie Robin
Why Do Islands Breed Giants? | Build an Island
Resources | Transcript | Site Map | Garden of Eden Home

Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule
About NOVA | Teachers | Site Map | Shop | Jobs | Search | To print
PBS Online | NOVA Online | WGBH

© | Updated November 2000

Support provided by

For new content
visit the redesigned
NOVA site

/wgbh/nova/eden/textindex.html /wgbh/nova/eden/ /wgbh/nova/eden/