A study has found that cuttlefish can pass a fishy version of the ‘marshmallow test’ – and those that can delay gratification the longest are the most intelligent.
Researchers have found that adult skates have the ability to spontaneously repair injured cartilage, using a type of cartilage stem cell. Human cartilage has very limited capacity for repair, and the finding may lead to new stem cell treatments for human cartilage injuries.
Latest analysis shows that human limbs share a genetic programme with the gills of cartilaginous fishes such as sharks and skates, providing evidence to support a century-old theory on the origin of limbs that had been widely discounted.