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Bubbles of methane gas rise through a mussel bed in the Gulf of Mexico.
Photo

Methane Bubbles Up From Seep

Methane gas, trapped deep within the Earth's crust, can slowly leak from cracks in...
Squalicorax shark fossil from the Smithsonian
Photo

Squalicorax Shark Fossil

During the late Cretaceous period, Kansas was covered by a vast sea. There,...
A fossil of the ancient shark Falcatus falcatus
Photo

The Ancient Shark Falcatus falcatus

The foot-long extinct shark Falcatus falcatus lived during the early Carboniferous...
A close up of a sediment core.
Photo

Sediment Core Close-Up

These deep-sea sediment cores were drilled from beneath the seafloor, and hold...
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...
Fish have certain adaptations, like blood with built-in antifreeze, to survive in the Antarctic.
Photo

Fish Adapt to Icy Water

This shadowy fish, Trematomus bernacchii, is well adapted to the ice-cold...
Weddell seals grind their teeth on holes in the ice to keep them open to their comings and goings between ocean and air.
Photo

Weddell Seal in Antarctic Water

Weddell seals grind their teeth on holes in the ice to keep them open to their...
Red hot magma and ash erupt from an underwater volcano.
Photo

An Underwater Volcanic Eruption

A volcanic eruption of superheated magma (some 2,200 degrees Fahrenheit) from the...
Superheated magma slowly leaks from a crack in the seafloor.
Photo

Superheated Magma Underwater

Superheated magma, about 2,200 degrees Fahrenheit, glows orange as it slowly leaks...
A walrus sits on a floating piece of ice.
Photo

Walrus on Ice

Lying on the ice with a few friends is not an unusual way to spend time for...
This jellyfish fossil is from the Cambrian period, more than 500 million years ago.
Photo

Fossil Jellyfish

How long have jellyfish lived in the ocean? This jellyfish fossil is from the...
Smithsonian researchers with fossil whale skulls from the group Monodontidae
Photo

Smithsonian Scientists Describe a New Fossil Whale

Monodontids, the group of whales that includes living belugas and narwhals, are...

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  • Ocean Life
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