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Two nurse sharks hover over a baited cage
Lesson Plan

Where Have All the Glaciers Gone?

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Two nurse sharks hover over a baited cage
Lesson Plan

How Raven Stole the Sun

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A harp seal in icy water
Overview

Seals, Sea Lions, and Walruses

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A manatee swims in Crystal River, Florida.
Article

From Mermaids to Manatees: the Myth and the Reality

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A beluga whale
Photo

Baby Beluga

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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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Swimmers brave the waters in the shadow of a coal-fired power plant. Coal plants like this one emit CO2 into our atmosphere which is warming the planet and altering the chemistry of the ocean.
Overview

Climate Change

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A thresher shark was killed after becoming stuck in a gillnet.
Article

What We’re Reading 10/6

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"This shot was taken during a dusk dive in Southern Leyte in the Philippines. I ended the dive with an amazing sunset," wrote Paul Cowell of his winning image.
Photo

Surfacing into a Sunset

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Valentinni's sharpnose puffer lives on Indo-Pacific coral reefs, where it shoals in groups of 10-100 puffers and feeds on algae and tunicates.
Photo

Valentinni's Sharpnose Puffer

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Juvenile California sea lion
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Acrobats of La Paz, Mexico

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