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Despite its fearsome look, the Atlantic wolffish (or sea wolf) isn't a danger to humans, largely preying on whelks, crabs, and sea urchins.
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The Toothy Sea Wolf

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A couple inches wide and up to ten feet long, the bobbit worm stays hidden under tropical sands with just its five antennae poking out—waiting for prey to swim by.
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The Bobbit Worm

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Jaw of the goblin shark
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The Goblin Shark

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A coral catshark
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Coral Catshark

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The first known filter feeder is a large shrimp-like creature called Tamisiocaris borealis. The feather-like structures on its head were used to rake plankton from the sea.
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The First Filter Feeder

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Twin-spot snappers are curious top predators on Pacific coral reefs, eating a variety of fishes, shrimps, crabs, and snails among others, and are usually around 2.5 feet long.
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Curious Bohar

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Deep-sea Copepod Head
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Deep-sea Copepod Gets a Close-up

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A close-up of tiny teeth on the common whelk's radula.
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A Snail's Rainbow Radula

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Humpback whales spend their summers feeding in cold, food-filled Arctic and Antarctic waters before swimming to warmer waters for the winter.
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Humpback Whales Going After Herring

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Whitemouth morays hide in the crevices of Indo-Pacific coral reefs with only their heads (and white mouths) emerging, mouths agape, to breathe and hunt crustaceans and fish.
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Eel, Embedded

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Two nurse sharks hover over a baited cage
Lesson Plan

How do Humpback Whales Feed?

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A puffin with a mouthful of fish.
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Watching for Fish in the Puffin's Beak

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