Step 4: If You Are Already Swimming, Leave Immediately

If you notice square waves while you are already in the ocean:

Follow these steps:

1. Stay calm

Panic wastes energy and makes it harder to think clearly.

2. Stop swimming farther out

Do not continue toward deeper water.

3. Turn toward shore

Begin moving back carefully.

4. Do not fight powerful currents directly

If you feel yourself being pulled sideways or away from shore, avoid exhausting yourself by swimming straight against the force.

Ocean safety experts recommend understanding currents and avoiding fighting against powerful water movement. (National Ocean Service)

5. Signal for help if needed

Raise your arm, call for assistance, or alert nearby lifeguards.

Step 5: If You Are On A Boat

Square waves can be especially dangerous for smaller boats.

If you are boating and notice a cross sea:

1. Reduce speed.
2. Avoid turning sharply.
3. Keep passengers seated.
4. Wear life jackets.
5. Move toward calmer water if possible.
6. Follow local marine warnings.

A confused sea state can make navigation difficult because waves may hit the boat from multiple directions. (Travel + Leisure)

Step 6: Warn Others Nearby

If you recognize the danger:

• Tell swimmers not to enter.
• Alert people preparing paddleboards or kayaks.
• Inform lifeguards if available.

Helping others avoid the hazard is one of the safest actions you can take.

Common Mistakes People Make When Seeing Square Waves

Mistake 1: Thinking They Are Just A Pretty Pattern

The biggest mistake is assuming:

“Those waves look organized, so they must be safe.”

In reality, the organized appearance comes from two conflicting wave systems.

Mistake 2: Going Closer To Take Photos

Square waves often attract attention because they look unreal.

However:

• Do not walk into the water for a better picture.
• Do not stand on slippery rocks near the waves.
• Do not fly drones from unsafe locations.

The best view is always from a safe distance.

Mistake 3: Trying To Swim Against The Current

Strong ocean movement can quickly exhaust even experienced swimmers.

Instead of fighting blindly:

• Stay calm.
• Preserve energy.
• Move strategically.
• Seek assistance if necessary.

Where Can Square Waves Be Seen?

Cross seas have been observed in different parts of the world, including areas such as:

• The coast near Île de Ré, France
• Parts of the Atlantic Ocean
• The Aegean Sea
• Other locations where different weather systems create intersecting swells

The famous viewing location near Île de Ré allows people to observe the phenomenon safely from elevated areas rather than entering the water. (Travel + Leisure)

A Simple Safety Rule To Remember

Use this simple method:

SEE → STOP → STEP BACK → STAY SAFE

SEE

Recognize the square pattern.

STOP

Do not enter the ocean.

STEP BACK

Move away from the shoreline.

STAY SAFE

Observe only from land and follow local safety advice.

Final Thoughts

Square waves are a perfect example of how nature can be both beautiful and powerful. Their geometric appearance may look peaceful, but the forces creating them are anything but simple. When two ocean systems collide, the result can produce unpredictable currents and dangerous conditions.