💡 Ở bãi biển — Fun Facts

The tallest sandcastle ever built was about 21 metres high.

Built in Germany, it was taller than three houses stacked up. It took lots of people and tonnes of sand to make.

The longest beach in the world stretches for more than 200 kilometres.

Praia do Cassino in Brazil is over 200 kilometres long. You could walk for many days and still not reach the end!

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.

Seashells were once the homes of small sea animals.

Little sea creatures grow hard shells to keep themselves safe. When they are gone, the empty shells wash up onto the sand.

A sandcastle holds together better when the sand is a little wet.

Water acts like glue between the tiny grains of sand. That is why damp sand near the sea is best for building.

Waves are made by the wind blowing across the water.

When wind pushes on the sea, it makes the water rise and roll. That rolling water becomes the waves that splash onto the beach.

Sand is made of tiny bits of rock and shell worn down by the sea.

Waves rub rocks and shells against each other for a very long time. Bit by bit they break into the soft sand you dig your toes into.