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A pink, white and black colored boxing crab holds two anemones in its claws.
Photo

Boxing Crab

The boxer crab or pom-pom crab gets its name from the two anemones it holds in...
A purple jellyfish
Photo

Stinging Beauty

Don't let this jellyfish's beauty fool you—even glancing one of...
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...
Tiny sponge spicules.
Photo

Sparkling Sponge Spicules

These sparkling sponge spicules are microscopic needle-like structures that many...
Corallimorpharian
Photo

Soft Coral Close-Up

These neon balloons weren't blown up for a party: they are the colorful tentacles...
A close-up of tiny teeth on the common whelk's radula.
Photo

A Snail's Rainbow Radula

This abstract image is a close-up of the tiny teeth that cover the radula of a...
The mauve stinger is a glowing jellyfish.
Photo

Glowing Mauve

The mauve stinger’s (Pelagia noctiluca) name in German means “night light,”...
Two of the worlds largest jellyfish, the lions mane jellyfish, float together.
Photo

Extreme Jellyfish

The lion’s mane jellyfish (Cyanea capillata) is the largest among the jelly...
Bright colors seem to jump off of this comb jelly, or ctenophore.
Photo

Floating Antarctic Comb Jelly

Bright colors seem to jump off of this comb jelly, or ctenophore. The rainbow...
A many-armed, orange starfish.
Photo

A Filter-Feeding Starfish

An orange brisingid starfish sits on a large reef of Lophelia pertusa, cold-water...
A bloom of moon jellies.
Photo

A Bloom of Moon Jellies

In recent years, blooms of jellyfish, such as these moon jellies (Aurita aurita) in...

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