Swimmer's itch, a common ocean rash, isn't contagious and usually goes away in a week. Seabather's eruption can last for several weeks and is caused by jellyfish larvae trapped in swimwear. An ocean ...

Understanding the Context

As millions of people journey to South Carolina beaches this summer, some will share the water with unwelcome companions. Dubbed sea poisoning, ocean itch and even seabather’s eruption, sea lice can ...