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Sarah DeWeerdt

Sarah DeWeerdt is a freelance writer in Seattle covering biology, medicine, and the environment.

Scratch My Back and I’ll Scratch Yours

Orcas in Washington are creating grooming tools out of kelp stalks

June 23, 2025

The Great Whale Conveyor Belt

The loss of whales has weakened the longest food chain on the planet

March 13, 2025

Why Do Animals Adopt?

Taking responsibility for another’s young reveals the deep evolutionary roots of care.

December 9, 2024

The Unseen Deep-Sea Legacy of Whaling

It’s not just whales who were decimated, but the creatures who live where they fall.

March 22, 2024

“It’s Like You’re a Space Explorer Encountering Aliens”

Scientists can now study species in the deepest, darkest parts of the ocean.

January 25, 2024

How a New Database Can Help Protect the Ocean

The Navigator project centralizes data about marine protected areas—and places with lesser protections—from around the world.

November 28, 2023

The Challenge of Deep-Sea Taxonomy

Miles below the ocean’s surface, should the old rules still apply?

May 11, 2023

Bioluminescence Is Nature’s Love Light

When sparks fly, new species follow.

October 19, 2022

Zombie Sponge Reefs Are Lurking at the Bottom of the Sea

The resurrection of glass sponge reefs proves extinction doesn’t have to be eternal.

July 31, 2014