Tuesday, 31 January 2012

Sea urchins

Sea urchins have lots of spines.
They are related to star fish and sea cucumbers.
They eat sponges and mussels.
They have five teeth.

Ghost crabs

Ghost crabs are scavengers.
They eat dead fish.
They live in burrows.
They use their claws to eat.

Monday, 30 January 2012

Six gill sharks

Six gill sharks have six gills.
All other sharks have five gills.
They are found at depths of up to 3000 meters.
At night they come up to the surface to eat.