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a deep sea jellyfish
Photo

Jellyfish from the Deep

A hydromedusa, seen at just over 12,800 feet and just above the seafloor along...
a sea fan grows over dead coral
Photo

Waving Sea Fans

Sea fans—softer-bodied coral relatives—colonizing a dead stony coral framework. ...
Coral showing signs of disease
Photo

Disease Takes Hold

The white splotches are lesions of infected coral. ...
coral polyps
Photo

Healthy Coral Polyps

Healthy coral is colorful. The entire coral is actually a colony of many little...
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 soft, yellow coral
Photo

Soft Coral

Most “typical” warm water corals found in shallow waters that most people...
A purple jellyfish
Photo

Stinging Beauty

Don't let this jellyfish's beauty fool you—even glancing one of...
The small larvae of elkhorn coral (Acropora palmata) settle and grow on the crustose coralline algae species Hydrolithon boergesenii.
Photo

Coral Larvae Settling

The small larvae of elkhorn coral (Acropora palmata) settle and grow on the...
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...

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