Square waves in Bačvice, Croatia, captured on 18 February 2022.

GRID BLOCKED Why ‘square waves’ are so dangerous – and you must get out of the sea quickly if spotted NEXT time you head to the beach, if you see "square waves" you should get out of the sea as soon as possible. Also known as cross seas, they may look pretty but are actually extremely dangerous - and have even caused shipwrecks. https://www.thesun.co.uk/travel/14074...