The sunflower sea star is a big starfish — more than 3 feet across — that roams the ocean floor in orange, yellow and purple. These invertebrates can grow as many as 24 arms, and they’re ...
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 ...