Clownfish avoid anemone stings by lacking sialic acid in their mucus. This prevents anemones from recognizing them as prey.

Sea otters might just be the cutest, most cuddling little critters on the planet. To see a sea otter demonstrate its ...

The ornately colored sea anemone (uh-NEM-uh-nee ... They form another, more famous symbiotic alliance with clownfish, which are protected by a mucus layer that makes them immune to the anemone's ...

tiny clownfish or bat rays living in touch pools. From sarcastic fringe heads to anglerfish, find out about some weird ...