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a diagram of a killer whale using echolocation
Photo

Echolocation

A whale sends out an echolocation whistle using air sacs. It detects the reflected...
Two Southern Resident killer whales.
Article

When Killer Whales Hunt the King of Salmon

In the Pacific Northwest of the United States there is a population of killer...
July 2021
a graphic of seals, sea lion, and a walrus
Photo

How Big Do Seals Get?

Pinnipeds come in all shapes and sizes. The largest seal is the Southern...
Narwhals with their long unicorn-like tusks.
Article

Native Knowledge of the Narwhal

The narwhal is an elusive mammal. During the winter months they feed in the deep...
March 2020
veterinarians hold a dolphin
Photo

Bay Dolphin

Veterinarians assess the heart health of a dolphin in Barataria Bay. ...
a veterinarian listens to a dolphin's heartbeat
Photo

Heart Check Up

Cynthia Smith listens to a free-ranging dolphin's heart. Monitoring a dolphin's...
a veterinarian listens to a dolphin's heartbeat
Article

The Musical Hearts of Dolphins

For Dr. Cynthia Smith, listening to hearts is part of the job. Her patients just...
September 2020
Photo of vaquita at the water’s surface with its face plainly visible.
Photo

Vaquitas at the Water's Surface

Governments and environmental organizations continue to monitor the vaquita...
A map showing different refuge and conservation areas.
Photo

Vaquita Refuge

Eliminating gillnets is key to protecting the vaquita from extinction. This map...
Photo of a man holding totoaba a vaquita caught in a net underneath.
Photo

Vaquitas as Bycatch

Gillnets used to catch totoaba accidentally catch vaquitas too. The vaquita’s...
A graph showing the population decline of vaquitas from 1997 to 2019. In 1997, there were 567 vaquitas. In 2012, there were 200. By 2014 there were fewer than 100, and by 2019 there was an estimated 6 to 9 vaquitas left.
Photo

A Population in Decline

At the current rate of population decline, the vaquita may be extinct in a few...
Map showing vaquita range in the Gulf of California with inset showing the Western Hemisphere and equator.
Photo

A Small Range

Vaquitas live in an area smaller than ¼ the size of metropolitan Los Angeles....

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