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Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.
overview

Corals and Coral Reefs

 Coral reefs are the most diverse of all marine ecosystems. They teem with life,...
two mangrove trees in the crashing waves
overview

Mangroves

 Mangroves are survivors. With their roots submerged in water, mangrove trees thrive...