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 ...

Urchin “barrens” are vast ... Sunflower stars are locally extinct due to a mysterious disease, and sea otters — a keystone species — haven’t returned to this part of the coast since ...

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.

The term Enhydra lutris, meaning ‘in the water’ and ‘otter’ in Ancient Greek, is specific to the carnivorous mammal who must eat around 25% of its body weight a day in marine fare including crab, sea ...