Bill Peet said he got the idea for the book from sketching crabs stacked on ice in the sea food display of a supermarket.

A great deal is now known about such signals in a wide range of animals, from crabs and spiders to monkeys and humans.

Its prey ranges in size from tiny limpets and crabs to giant octopuses.

They also uncovered fossils from fish, crabs, coelacanth and crocodile-like species.

Barnacles are a different group from crabs and shrimps.

Apart from its outstanding size, the Japanese spider crab differs from other crabs in a number of ways.

Scientists have learned that the giant shellfish evolved from mere hermit crabs.

Only safety in numbers protects them from birds and crabs.

As he examined the source of these lights, he found that they came from small crabs with glowing appendices.

She said the students used to find a large variety of species, from hermit crabs to little shrimp.