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a veterinarian listens to a dolphin's heartbeat
Article

The Musical Hearts of Dolphins

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Aerial view of a North Atlantic right whale mother and calf.
Article

Hope & Despair for the North Atlantic Right Whale Population

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A right whale breaches, lifting its huge body out of the water.
Overview

North Atlantic Right Whale

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an animated dolphin in an arm chair
Video

Don't Feed Wild Dolphins

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An unidentified earplug from the National Museum of Natural History collection.
Article

Whale Earwax: What You Can Learn From Strange Collections

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The Whale Sanctuary of El Vizcaino site in Mexico was inscribed on the World Heritage List in 1993. The sanctuary contains important breeding and wintering sites for the grey whale (Eschrichtius robustus - pictured here), harbor seal (Phoca vitulina),
Photo

Whale Sanctuary of El Vizcaino, Mexico

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The Wadden Sea site in Germany and the Netherlands was inscribed on the World Heritage List in 2009. It hosts marine mammals, including the harbor seal Phoca vitulina, pictured here.
Photo

Wadden Sea, Germany & the Netherlands

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A gray seal on the shores of Surtsey, Iceland.
Photo

A Unique World Heritage Site: Surtsey, Iceland

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Hawaiian monk seal comes ashore
Photo

Red Listed: Study Finds One-Fifth of World's Vertebrates Are at Risk

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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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Photo of a Hawaiian monk seal on the beach, with the ocean in the background.
Photo

The Endangered Hawaiian Monk Seal

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