To sting or not to sting? For jellyfish, that is the question whenever their tentacles brush up against anything, including millions of human swimmers around the world. Stingers are fired out at about ...

The stinging cells of jellyfish, called nematocytes, have evolved to be one of the world's most efficient predation tools. The nematocysts consist of a capsule and folded tubule, and use high pressure ...

The secret’s in the snot. Chemical changes in the mucus that coats a clownfish’s body can blunt the sting of its symbiotic anemone partner. To investigate, she and her colleagues raised orange ...