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An illustration of the megalodon shark.
Photo

Ancient Giant Megatooth Shark

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a bull shark in a net
Photo

A Bull Shark's Toothy Grin

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scientists insert an acoustic tag under a shark's skin
Photo

Tagging a Shark

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A prickly dogfish swims in blue water near the ocean's bottom.
Photo

Prickly Dogfish

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Two Catsharks with a black background
Photo

Leopard Catsharks

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A thresher shark uses its unusual tail fin for swimming and hunting.
Photo

The Thrashing Thresher Shark

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"This particular shark was just as curious as I was, which enabled me to capture such an amazing shot. His eye came just above the surface and stared back at me as if to show me he was watching, while below the surface his mouth opened to reveal his sharp
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Lemon Shark, Offshore Grand Bahamas Island

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An illustration of the megalodon shark.
Overview

The Megalodon

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Hawaiian monk seals are among the wildlife found within the Papahānaumokuākea World Heritage Site.
Slideshow

Backbone of Biodiversity at Risk

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Caribbean reef sharks swim over a coral reef in the Bahamas.
Article

Ocean Portal's Top Shark Resources

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Henry the Fish is made completely out of colorful plastic that washed up on Oregon beaches.
Slideshow

Washed Ashore: From Beach Trash to Ocean Art

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Giant Pacific Manta Ray, Roca Partida Sea Mount, Revillagigedos Islands, Mexico
Article

Tagging and Tracking Animals Underwater

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