If square waves start to appear in the ocean, it’s best to leave the water right away.

Visiting the beach is the epitome of vacation dreams.

Relaxing under the sun with the gentle touch of sand on your toes and the soothing sound of water against your feet is truly a beautiful sight.

When you’re out at sea, always prioritize your safety. Stay vigilant for waves and always face the sea.

You probably know about rip currents and changing tides, but you might not be aware of the risks associated with square waves.

Indeed, this does occur, and it is quite a breathtaking view. However, it can be quite frightening to witness in the water.

When two waves intersect, they create a square wave, also referred to as a “cross sea,” which takes on a checkerboard-like appearance.

In 2010, the European Space Agency mentioned that such conditions are widespread in the ocean, arising when different wave systems coexist.

Based on a 2004 survey, it was found that a significant number of ship accidents took place in crossing sea states.

These square waves are not a common occurrence, but when they do happen, they tend to be close to the coast.

The Île de Ré on France’s western coast is a wonderful place to observe them from a secure distance.

Navigating these cross-seas can be challenging for boats and swimmers due to the waves reaching up to 10 feet high and altering the wind direction.

This situation is rather uncommon, but if it does happen, it’s best to avoid going out on a boat or swimming in the water due to potentially rough conditions.

Alternatively, you could relax on the beach or take a dip in the calm waters until the weather gets better. Then you can enjoy a peaceful swim without any overcrowding.

What occurs if you find yourself caught in a square wave?
While swimming in the water, you might not immediately realize the organized pattern of the waves, but you will definitely feel the challenge of navigating through increasing swells and battling against conflicting currents.

It’s better to swim out too far initially and to exit the water promptly when the waves get too big.

Square waves pose a threat to boats and ships farther from shore, so it’s best to stick to the shallows for safety.

Make sure to pass this along to your loved ones for their safety!