Sea Urchins
See the world’s tiniest organisms curl and crawl in these videos
What creatures make these rare ocean gemstones?
Want to help California’s kelp forests? Eat sea urchins.
To save kelp forests, scientists try breeding sea stars
Massive marine die-off in Russia could threaten endangered sea otters, other vulnerable species
California's disappearing sea snails carry a grim climate warning
Hawaii Enlists Urchins to Help Corals Resist Algae Invasion
Why Smuggling of This Ocean Creature May Skyrocket
Watch a Colorful Sea Urchin Hitch a Ride on a Crab
As Sea Stars Die, New Worries About Urchins
Mass Animal Die-Offs Are on the Rise, Killing Billions and Raising Questions
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