Starfish are beautiful organisms, but if you think about it a little deeper, they’re also really strange. As echinoderms, they’re relatives of sea cucumbers and urchins, meaning at one point they ...

The five-armed figure of many starfish has to be one of the most iconic underwater curiosities in the world. How did these marine invertebrates attain such a bizarre body? It turns out that they weren ...

Riah Evin, a biologist at the California Academy of Sciences’ Steinhart Aquarium, propagates endangered Sunflower Sea Stars on Nov. 20 in San Francisco. (Karl Mondon/Bay Area News Group) For the last ...

For the last decade, California’s offshore seafloors have been missing a massive, colorful predator that keeps kelp-munching sea urchins in check. The sunflower sea star is a big starfish — more than ...