In Hawai'i they have a saying, "Never turn your back to the surf." This saying heads an important warning because the surf in Hawai'i is often very rough and the undertow strong. Many people drown in Hawai'i mistaking the surf to be tame. It's not. Be careful swimming in Hawai'i and make sure the beach is safe for swimming before you attempt to get in the water above your knees.