Brainy Octopuses

In (22) _______, the US Air Force sponsored scientists to study the way octopuses (23) _______ their brains. Some octopuses in laboratories seem to play with objects as if they were toys – a sure sign of intelligence. Others could pick up (24) _______ skills like opening jars.

Perhaps the most striking thing about octopuses (25) _______ their ability to change their colour and body pattern. They do this to camouflage (26) _______ and also to communicate with others. They can completely change their appearance in less than a second – a striped octopus can suddenly become spotted.