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A rendering of an underwater marine scene depicting life ~145-65 million years ago, when rudist clams were the major reef builders.
Article

Long Before Coral, Mollusks Built the Ocean's Reefs

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The Line Islands are one of the most remote places in the Pacific Ocean.
Article

Expedition to the Line Islands

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An illustration of the megalodon shark.
Overview

The Megalodon

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a man with a hard helmet in a cave
Article

Adaptation in the Extremes: What Scale Worms Teach Us About Evolution

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Colorful underwater animals highlighted with a white background.
Article

Biocubes: Life In One Cubic Foot

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red worms penetrate holes in bone
Article

Zombie Worms Crave Bone

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The Autonomous Reef Monitoring Structure was developed to help scientists study coral reef diversity and have now been adopted broadly to study diversity around the world.
Article

A Better Way to Measure Marine Life

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The Belize Barrier Reef Reserve System consists of the largest barrier reef in the northern hemisphere, offshore atolls, and several hundred sand cays, mangrove forests, coastal lagoons, and estuaries. The system's seven sites illustrate the evolutionary h
Article

Charles Darwin's Ocean Upwelling

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Riftia tubeworm (Riftia pachyptila) colonies near hot spring.
Article

The Microbes That Keep Hydrothermal Vents Pumping

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Octocorals dominated the seafloor on Chris Mah's Okeanos mission to Johnston Atoll in the remote Pacific Ocean.
Article

Deep-sea octocorals: An ecosystem of their own

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"Ocean sunfish" by Mark Harris
Article

Chasing a Basking Shark

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