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An underwater photo of coral recovering from a bleaching event.
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A Pleasant Surprise: The Recovery of Bleached Panamanian Corals

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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 bull shark's ability to prey on many different species is helped by its capacity to survive in both freshwater and saltwater.
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Swinging for Bull Sharks

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Great White Sharks breach to hunt -- with split-second timing they grab their prey in one swift snatch. Follow the whole breaching action in this slideshow.
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Breaching Great White Shark on the Hunt

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The Japanese spider crab may be big but it is not invincible.
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Japanese Spider Crab

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A thresher shark uses its unusual tail fin for swimming and hunting.
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The Thrashing Thresher Shark

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A rendering of an underwater marine scene from the Cambrian Period, featuring an arthropod, annelids, and other animals.
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Cambrian Period (542 – 488 Million Years Ago)

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Pink meanie jellyfish
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It’s a Jelly Eat Jelly World

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Circular scars from a giant squid sucker on sperm whale skin.
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Giant Squid Sucker Marks

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A blue-ringed octopus
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A Beautiful and Deadly Octopus

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In 2011, storms and lack of ice-cover due to a warmer winter climate resulted in hundreds of seal pups being washed up on the shore of Prince Edward Island. Like many, this young seal faced an uncertain future. See more Nature's Best Photos.
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Harp Seal, Prince Edward Island National Park, Canada

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