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'Elsewhere, dozens of jaw bones are stacked up. One lower jaw of a male sperm whale is abnormally twisted into a corkscrew shape: this unusual specimen came from an Antarctic whaling ship in 1959. At first glance, the jaw seems to make feeding an impossibility. But the back teeth, worn down to “stumpy pegs”, indicate that this whale was successfully eating giant squid, thanks to its highly specialised echolocation and efficient suction feeding.'
