Tidal race

Imagine a big swimming pool with a strong wave machine at one end. The wave machine creates big waves that travel across the pool towards the other end. When the waves get to the other end, they hit the wall and bounce back towards the wave machine.

Now imagine that the pool is actually the sea, and the wave machine is the moon. The moon's gravity creates big waves in the sea, which are called tides. Just like the waves in the swimming pool, the tides travel across the sea towards the shore.

But sometimes, when the tide reaches a narrow channel or a rocky area, the waves get squeezed together and pushed upwards. This creates a very strong and fast-flowing current, which is called a tidal race. It's like a river flowing very quickly between steep banks.

Tidal races can be very dangerous for boats and swimmers because the water is moving so fast. It's important to be careful around them and only attempt to navigate them with the right equipment and experience.