Due to an error in the editing process, an incorrect quote was attributed to Jamie Seymour, director of the Tropical Australian Stinger Research Unit, in last week's Times Higher . The quote on Chironex fleckeri jellyfish should have read: "We have seen them corral fish like a killer whale, then one breaks through into the middle and grabs the fish." Instead the quote and headline suggested that box jellyfish corral and eat killer whales, which is incorrect.