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A soft, yellow coral
Photo

Soft Coral

Most “typical” warm water corals found in shallow waters that most people...
A crab sits on a coral with a sponge covering its head
Photo

A Sponge Crab's Updo

The sponge on this crab's back is more than a stylish accessory. The sponges are...
Lost nets become entangled on a coral reef in the NW Hawaiian Islands, doing damage for decades. Wave action on the net breaks pieces of coral off until the net breaks, when it is free to catch on new reefs and do more damage.
Photo

Lost Nets Hurt Coral Reefs

The impacts of derelict fishing gear on the Northwest Hawaiian Islands coral reef...
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...
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...
GEOMAR scientist Armin Form works at his lab during a long-term experiment on the effects of lower pH, higher temperatures and "food stress" on the cold-water coral Lophelia pertusa.
Photo

Deep-water Corals and Acidification

GEOMAR scientist Armin Form works at his lab during a long-term experiment on the...
Researchers can study ocean acidification in the lab by rearing organisms (here, Lophelia deep-sea corals) in seawater with variable pH and measuring if they grow, eat, breathe, reproduce, or develop differently.
Photo

Studying Acidification in the Lab

Researchers can study ocean acidification in the lab by rearing organisms in...
A pearly razorfish
Photo

Pearly Razorfish

The pearly razorfish’s name may be slightly misleading since it is neither as...
A many-armed, orange starfish.
Photo

A Filter-Feeding Starfish

An orange brisingid starfish sits on a large reef of Lophelia pertusa, cold-water...
How Many Nights of Hanukkah? A harp has its own place in holiday music, but we also think this sponge looks like a super-sized menorah! This newly-discovered carnivorous sponge (Chondrocladia lyra) was found using robotic submersibles operated by the
Photo

Harp Sponge

This newly-discovered carnivorous sponge (Chondrocladia lyra) was found using...

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