Stinging Water Mystery Solved: Jellyfish Can Sting Swimmers, Prey with 'Mucus Grenades'

In warm coastal waters around the world, swimmers can often spot large groups of jellyfish pulsing rhythmically on the seafloor. Unless properly prepared with protective clothing, it is best to steer clear of areas that  Cassiopea, or upside-down jellyfish inhabit: getting too close can lead to irritating stings, even without direct contact. Now, researchers have taken a close look at the cause of the “stinging water” encountered near these placid-looking creatures: a toxin-filled mucus…

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Source: webwire
Stinging Water Mystery Solved: Jellyfish Can Sting Swimmers, Prey with 'Mucus Grenades'