MSNBC reports that more than 50 swimmers were stung by a lion's mane jellyfish, or perhaps several, at a New Hampshire Beach. With tentacles extending for dozens of yards, these creatures are among the largest in the world--but not the heaviest. This one weighed about 40 pounds, though doubtless a lot of it broke off in the water when handled. No one was seriously hurt in this "attack." The sting of the lion's mane causes hours of pain.
(Thanks to Faye for the news tip.)