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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...
Magellanic penguins on the beach in Punta Tombo, Argentina
Photo

Punta Tombo Penguins

Every breeding season, some 400,000 Magellanic penguins (Spheniscus magellanicus)...
Hagfish Slime Thread
Photo

Spin Hagfish Slime into Silk

Believe it or not, this unraveling thread is from hagfish slime. Hagfish are...
Mangrove Salt Glands
Photo

How Mangroves Deal with Saltwater

Looking at a white mangrove (Avicennia marina) leaf cross-section under the...
Fireworm Setae
Photo

Fireworm Bristles

No, this isn't a bundle of paintbrushes: you're looking at a fireworm...
Dover Sole Skin
Photo

Close-Up of Dover Sole Skin

This close-up of the skin of dover sole (Solea solea) masks its true ability: to...
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...
A close-up of tiny teeth on the common whelk's radula.
Photo

A Snail's Rainbow Radula

This abstract image is a close-up of the tiny teeth that cover the radula of a...
Tropical hatchetfish, like the one shown in this X-ray photograph, live in the dark depths of the ocean. Like many other deep-sea fishes, they have large eyes and bioluminescent spots on their bellies.
Photo

X-Ray Image of a Tropical Hatchetfish

Tropical hatchetfish (Argyropelecus lychnus), like the one shown in this X-ray...
In the X-ray image of this Viper Moray Eel (Enchelynassa canina), note the second set of jaws in the “throat”; these are the gill arches, which are present in all fish.
Photo

X-Ray Image of a Viper Moray Eel

In the X-ray image of this Viper Moray Eel (Enchelynassa canina), note the second...
Despite its fearsome look, the Atlantic wolffish (or sea wolf) isn't a danger to humans, largely preying on whelks, crabs, and sea urchins.
Photo

The Toothy Sea Wolf

With gnarled teeth and a perpetual frown, the sea wolf is a creature out of our...

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