Demirel, both from Pennsylvania State University, reviewed properties of fibres and films—and their possible applications—inspired by proteins derived from teeth found in squid arms.

This means it cannot swallow large pieces of food. Giant squid have a parrot-like beak between their eight arms and two tentacles. It is used to kill prey and to tear it into pieces small enough ...

Squids also have eight arms with suckers on the undersides and two longer tentacles, which are used to grab prey. More than ...