Sea urchins are prickly "hedgehogs of the sea" that exist in every ocean around the globe. You might have seen their spines peeking out of the water during low tide - or even stepped on one while ...

Despite their consumption of the largest urchins, the sea otters alone could not control urchin populations. Sunflower stars play an integral role in these kelp forest communities by preying upon ...

Sea otters are keystone species in kelp forests. Kelp forests rely on the top-down pressure sea otters exert via predation on sea urchins. By controlling the sea urchin population, they help manage ...

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Warming sea water has triggered an ... But even without these in place the Otter Force One can still be used by human divers to improve their urchin-gathering efficiency.

View on YouTube Allow content from YouTube “When you see a sea otter, they’re usually either eating or digesting,” often munching on urchins, says ecologist Anne Salomon, a Pew marine fellow. That’s a ...

Despite recent efforts by sea urchin harvesters to reduce protections for southern sea otters under the Endangered Species Act, the species is still at risk, federal officials say. The fuzzy marine ...

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