When hammer coral says, “new year, new me”, it truly means it: many colonies of the coral species change their sex annually. The pattern seems to be a first among animals. In 2011, Shinya Shikina at ...

This is the spectacular moment a fluorescent coral dazzled in an aquarium. Footage shows a man grabbing a neon green hammer coral in the tank in Fujian, China, on October 20. The coral, resembling ...