Dumbo octopuses are relatively small. They grow to an average length of 20-30 centimetres. Some bigger specimens been found, however. The largest so far was 1.8 metres long and weighed 5.9 kilogrammes ...

The dozen or so species that make up Grimpoteuthis are called Dumbo octopuses because of the two large fins—one on either side of the mantle—that protrude like ears. Add in the octopus’s ...