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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,...
Japanese scientists videotaped this female giant squid, alive, at the water's surface
overview

Giant Squid

 Giant squid live up to their name: the largest giant squid ever recorded by...
A shell placed in seawater with increased acidity slowly dissolves over 45 days.
overview

Ocean Acidification

 Ocean acidification is sometimes called “climate change’s equally evil twin,”...
A photo of a squid using bioluminescence to hide in the deep sea.
overview

Bioluminescence

 You may have seen the sparkle of fireflies on a summer’s night. The fireflies...
A shimmering bobtail squid.
Photo

Bobtail Squid Shimmers

 Within hours of birth, the Hawaiian bobtail squid attracts bioluminescent bacteria,...
A live coral polyp with turquoise tissue and brown tentacles closes its mouth (the slit at the center of the radiating ribs) tight.
Photo

Closed-Mouth Coral

 A live coral polyp with turquoise tissue and brown tentacles closes its mouth (the...
Beating Cilia of Comb Jelly Combs
Photo

Sea Gooseberry Larva

 These beautiful wisps are the hair-like cilia of a sea gooseberry larva, a common...