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A sea sponge underwater
Article

Sea Sponges: Pharmacies of the Sea

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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 transparent box jellyfish with a blue background.
Audio

Box Jellyfish: One Species at a Time

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Sea star in a tide pool
Photo

Tide Pools and Adaptations

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This giant squid washed up on a beach in Norway around 1950.
Photo

Giant Squid on Beach

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Dr. Clyde Roper in a one-person submersible.
Photo

One-Person Submersible

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A tiny larval (baby) starfish.
Article

The Invisible Loss: The Impacts of Oil You Do Not See

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Male fiddler crabs, like this one collected on Moorea, wave their enlarged claw as way of signaling to other crabs, especially during mating season.
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Fiddler Crab

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A giant squid dissection
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Dissecting a Giant Squid

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a squid in blue water
Video

Quest for the Giant Squid

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Jellyfish are transparent and made up of 95 percent water, so you’d think there isn’t much to them. But you’d be wrong. Jellyfish are more complex than you’d think—and one of their most fascinating parts is their stinging cells.
Video

How Do Jellyfish Sting?

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Syllid fireworms can be found mainly on the seafloor, but they switch to a planktonic form to reproduce, where the females use bioluminescent signals.
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Syllid Fireworms

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