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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,...
After ocean scientists sort deep-sea coral samples into their different types, they measure and photograph the specimens.
slideshow

Studying Deep-Sea Corals

 What happens to deep-sea coral samples after they are collected? In this image...
Thu, 06/09/2011 - 09:23
A polar bear and its cub in Arctic National Wildlife Refuge, Alaska.
slideshow

Celebrating Marine Moms

 The ocean is home to many moms of all shapes and sizes: from charismatic polar...
Wed, 04/24/2013 - 17:29