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A photo of Oceana's ice class research vessel, the Hanse Explorer, on the Baltic Sea.
slideshow

Biodiversity in the Baltic Sea

In the spring of 2011, a research crew from Oceana spent two months in the...
Wed, 10/12/2011 - 16:56
Close-up photograph of translucent coral polyps, showing the symbiotic algae living inside.
slideshow

Zooxanthellae and Coral Bleaching

Tiny plant-like organisms called zooxanthellae live in the tissues of many animals,...
Thu, 12/03/2009 - 12:14
The Ross Sea is a 1.9 million square mile (3.6 million square km) stretch of ocean off the coast of Antarctica.
slideshow

A Trip South to Antarctica’s Ross Sea

The Ross Sea, a 1.9 million square mile (3.6 million square km) stretch of ocean...
Mon, 06/10/2013 - 11:37
Orangutan crabs are covered in thin reddish hairs, and are frequently found living in bubble coral.
Photo

Orangutan Crabs from Komodo Island

"While Komodo Island, Indonesia is famous for its giant prehistoric lizard, its...
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...
Cancer cells treated with discodermolide, a chemical from a sponge found on deep-sea coral reefs.
Photo

Treated Cancer Cells

These cancer cells have been treated with discodermolide, a chemical obtained from...
Algae has overtaken this coral reef off heavily populated Kiritimati, or Christmas Island.
Photo

Unhealthy Coral Reef, Kiritimi, Line Islands

Algae has overtaken this coral reef off heavily populated Kiritimati, or Christmas...
What is coral? The answer is coral is an animal. This cutaway diagram of a coral polyp shows the location of its photosynthetic algae, or zooxanthellae, which coral needs to survive.
Photo

What Is Coral? A Coral Polyp and Zooxanthellae

What are corals? Corals themselves are animals. But tropical reef-building corals...
Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.
Photo

Coral Reef on Gangga Island, Indonesia

Corals, sponges, and algae are the major components of most coral reef communities....
An unidentified earplug from the National Museum of Natural History collection.
Article

Ocean Objects of Wonder

As humans, we are constantly learning. Not only as individuals from the moment we...
March 2017

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