HEIDI the octopus is dreaming. As she sleeps, her skin changes from smooth and white to flashing yellow and orange, then to deepest purple and, finally, to a series of greys and yellows, criss-crossed by ridges and spiky horns. David Scheel, Heidi's human carer, has seen this pattern before in waking octopuses: Heidi, he says, is dreaming of catching and eating a crab.
展开▼
