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A zoomed-in image of the crown-of-thorns sea star.
Article

A Plague of Sea Stars

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A small, transparent, shell-less sea snail in the open ocean.
Article

Angels of the Sea

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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.
Overview

Great White Shark

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green and red pom poms adorn a decorator crab
Article

Happy Crabby Holidays

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a reef scene with fish and large "sea scorpions"
Photo

A Silurian Reef

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two predatory fish attack birds
Photo

Xiphactinus

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Snails at the bottom of the ocean in a Carboniferous Period
Photo

Carboniferous Snails

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Fish larvae exposed to oil make fish slow to respond to predators, and more likely to take risks.
Photo

Fish Larvae in Oil

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A translucent pteropod swims freely in the open ocean with a black background.
Photo

Shelled Pteropod

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Illustration of Opabinia with five eyes and what look like scales.
Photo

Opabinia

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Cover of the Book Citizens of the Sea
Article

Citizens of the Sea

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A glowing ocean surface.
Article

Six Ways to See Ocean Ocean Bioluminescence

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