Coral reefs are found in warm shallow water. Along with corals, other specie such as algae, plankton, microorganisms, fish, sea stars, and octopuses are plentiful.

Earth Snapshot - Phytoplankton
Earth Snapshot - Phytoplankton, Recent aerial views of worldwide phytoplankton blooms.
Marine Diatoms
Marine Diatoms, Dr. Carina Lange, University of Southern California, San Diego, Great site!! Pages are a combination of text, photos, and interactive images.
Plankton
Plankton, NatureWorks, New Hampshire Public Television, Image Credits: Clipart.com unless otherwise noted, Photos and description of zooplankton, copepods, krill, and others.
Plants of Bermuda's Reefs
Plants of Bermuda's Reefs, Bermuda Biological Station for Research and the College of Exploration, Click on a thumbnail for description.