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A tornado of sardines swirls around diver and photographer Erwin Poliakoff in the Philippines.
Article

Why the Littlest Fish Matter a Whole Lot

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A puffin with a mouthful of fish.
Article

Watching for Fish in the Puffin's Beak

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Looking through this iceberg's reflection in the Antarctic water, you can see the iceberg below the surface—some 90% of its total volume.
Overview

The Arctic and The Antarctic

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A shell placed in seawater with increased acidity slowly dissolves over 45 days.
Overview

Ocean Acidification

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Seagrasses are flowering plants that can form dense underwater meadows and are an important shallow water habitat.
Overview

Seagrass and Seagrass Beds

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Sea otters floating on the surface of the ocean.
Article

Not Just Another Fuzzy Face

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Grey reef sharks are among the most versatile and tough predators on a Pacific coral reef, but they are also among the most vulnerable species, as they are threatened by wasteful fishing practices like shark finning.
Article

Where the Shark and the Snapper Roam

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This recently discovered hairy crab species (Kiwa hirsuta) has no eyes.
Overview

The Census of Marine Life

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Chrysaora melanaster is a jellyfish found in the Arctic.
Overview

Jellyfish and Comb Jellies

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