You can play a game of Jeopardy on your computer to learn more about rip currents. Rip currents happen in oceans and in the Great Lakes, too. It's a foamy stretch of water along beaches that can pull you out into deeper water. There are ways to stay safe, though. Stay out of the current if you see it. If you are trapped in it, stay calm. Swim along the shore and you can then swim out of the rip current. It's only a narrow bit of water.