Small urchins, like the tuxedo urchin, can get by in a 20-gallon aquarium, but giant types like the long-spined urchin need at least 75 gallons. Sea urchins eat algae.

Read: The sea-urchin murderer has finally been apprehended “We’ve come a long way but obviously still have a ton more to do,” Patterson says. Despite the unknowns, he’s optimistic.

The urchin-rearing efforts share space with other projects run by the Florida Aquarium’s Conservation Campus. In one bright, spacious lab, rescued sea turtles with illnesses and injuries peer ...

Diadema, a Caribbean sea urchin, has suffered two massive dieoffs in recent decades. ... The first hurdle is trying to get the darn things to reproduce — and grow up — in an aquarium.

These days, long-spined sea urchins are known as the gardeners of the sea. They tend the algae on the coral reefs they call home, making sure it never overwhelms their hosts. Spotting one on the ...

The Sea Life Aquarium at American Dream Mall in East Rutherford provides an educational experience for visitors of all ages. With more than 250 species of marine life, including sharks, rays, and ...

The New England Aquarium is raising 18 baby sea dragons after a successful and rare breeding event. The baby dragons, who look too much alike to have names, will go on display this summer.

The Sea Life Aquarium at American Dream Mall in East Rutherford provides an educational experience for visitors of all ages. With more than 250 species of marine life, including sharks, rays, and ...