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a map of the Arctic sea ice in august
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Sea Ice Extent

Every year the Arctic sea ice grows and shrinks in accordance with the seasons. The...
A squat lobster and blackbelly rosefish find shelter on a Lophelia pertusa coral reef off the southeastern United States.
overview

Deep-sea Corals

 It may be the last place you’d expect to find corals—up to 6,000 m (20,000 ft)...
Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.
overview

Corals and Coral Reefs

 Coral reefs are the most diverse of all marine ecosystems. They teem with life,...
two mangrove trees in the crashing waves
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Mangroves

 Mangroves are survivors. With their roots submerged in water, mangrove trees thrive...
On average, Arctic sea ice has decreased by four percent per decade since the late 1970s.
overview

Sea Level Rise

 The ocean never stops moving. When you visit the beach, waves roll in and recede...
Juvenile Clam with Tentacles
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Spaceship Mollusk

 No, this is not an alien spaceship from another world—it is a baby file clam...
Fireworm Setae
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Fireworm Bristles

 No, this isn't a bundle of paintbrushes: you're looking at a fireworm...
Even when a lobster is still a developing egg, you can see some of its adult features: an eye and legs.
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Lobster Egg

 Even when a lobster is still a developing egg, you can see some of its adult...