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A coral head in the Mesoamerican Reef has both bleached and living coral. The white sections are bleached and the brown parts still contain zooxanthellae, the symbiotic algae that provide food to their coral hosts.
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Bleached Coral On Mesoamerican Reef

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"Break On Through" was taken by Wendy Wolf at California's Pfeiffer Beach. This photo was a winning selection in the Portraits of Planet Ocean Flickr contest.
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Break on Through - Wendy Wolf

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Model of a lion’s mane jellyfish on display at the Smithsonian National Museum of Natural History. This jellyfish, a member of the phylum Cnidaria, can have tentacles up to 190 feet long (58 meters) and a bell almost 7 feet (2 meters) in diameter.
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Lion's Mane Jellyfish in Sant Ocean Hall

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You can explore the Curasub from your computer! Inspect, launch, board and recover to get an idea of what it's like to mann an underwater submersible.
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Tour the Curasub!

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Photo Spread showing male fish with mouth full of eggs from Citizens of the Sea
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Devoted Dads: Photo Spread from Citizens of the Sea

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Walter Adey and the NMNH coral reef tank
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Walter Adey and Coral Reef Tank

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Hastigerinella digitata's many spines support sticky, hair-like “fishing lines” made from cytoplasm (the living part of a cell – mostly fluid, salts and proteins) that entangle prey.
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Tiny, but Deadly

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Like a typical jelly, the tentacles of Haliscera biglowi trail behind it as it moves, causing water flow to push small organisms into the path of the jelly’s deadly stinging grip.
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Stinging Grip

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Bathochordaeus stygius are filter feeders closely related to sea squirts in the phylum Chordata, the same phylum to which humans belong.
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Mucus Home

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Sea squire illustrations from Ernst Haeckel.
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Sea Squirts

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Starfish—marine invertebrates of the phylum Echinodermata—are famous for their ability to shed limbs as a means of defense and then regenerate the sacrificed part.
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Haeckel Starfish

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Thumbnail of a Sperm Whale seen from a submersible.
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Close Encounters with a Sperm Whale

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