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The staghorn coral is listed as Threatened under the U.S. Endangered Species Act. It is one of 22 coral species listed.
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Staghorn Coral

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A brachiopod looks like a clam, but they aren't closely related.
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A Modern Day Brachiopod

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This photograph of Gerardia sp. was taken at the Cross Seamount in the Pacific Ocean at a depth of 400 m (1,312 feet).
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Gold Coral Close-up

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Shown here are several deep-sea coral species: From left to right are an unidentified purple octocoral, a small gold acanthorgorgiid octocoral, and a large colony of pink Corallium secundum
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Diverse Deep-Sea Corals

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A photo of a candy basslet, an orange and yellow-striped fish.
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Candy Basslet

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Photo of coral polyp, with a single bleach polyp.
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Corals Threatened by Acid Seas

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The head of a turtle-headed sea snake.
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A Turtle or a Sea Snake?

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“On an afternoon dive, I spotted a small group of sweetlips in the current among a shoal of juvenile convict blennies. It took me some time to get close to the fish without spooking them. I took several frames but this one was my favorite because of the
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Sweetlips, Raja Ampat, Indonesia

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Notice the pink tentacles, which “recliners” used to filter feed.
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Recliner Rudists

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A purple hard coral releases bundles of pink eggs glued together with sperm.
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Coral Spawning

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The crew aboard Oceana’s research vessel Ranger were surprised to discover large colonies of deep-sea white coral in the Western Mediterranean Sea.
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Deep Coral Sighted in Mediterranean

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Dinoflagellates are major producers of oxygen in the ocean (and freshwater). But some species can grow out of control, causing a red tide.
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Dinoflagellate

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