The pom pom crabs, also known as Hawaiian boxer crabs, carry tiny sea anemones in each claw and use them to spar with competitors. This anemone species, Triactis producta, is venomous — and the ...

The onion sea anemones can fan out its tentacles, which they use to defend against predators. “Within the tentacles are structures known as nematocysts.

Sea anemones turn oxybenzone into a light-activated agent that can bleach and kill corals. Credit: Georgette Douwma/Getty. A common but controversial sunscreen ingredient that is thought to harm ...

Onion sea anemones are washing up on the shore of North Padre Island in Texas. Facebook video screengrab from Jace Tunnell Resembling a tiny pebble when its contracted, a sea creature washing up ...