Crabs can walk sideways along the beach.
A crab's legs bend in a way that makes moving sideways easy. It can scuttle left or right very quickly to hide.
More facts about At the Beach
Sand is made of tiny bits of rock and shell worn down by the sea.
Waves are made by the wind blowing across the water.
A sandcastle holds together better when the sand is a little wet.
Seashells were once the homes of small sea animals.
The longest beach in the world stretches for more than 200 kilometres.