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Can a Lionfish-Patterned Suit Repel Sharks?

“Rash guards,” also called “rash vests” and “rashies,” may not be that well known to the general public, but they have been used by water sports jocks for years. Made of spandex and nylon or polyester, the synthetic material resembles a wet suit, but instead of keeping the wearer warm, it helps cool them off.…