To witness a train of waves rolling and crashing ... shore quickly, signal for help,” Mathew Giachetti, of the United States Lifesaving Association (USLA), told Islands.com. Also called “cross ...

In a video from the National Oceanic and Atmospheric Association (NOAA), it's explained that it can be like the weight of a car crashing ... cross-sea waves, and if you see them, get back on shore ...

A man walks in the cold rain toward the Duluth shipping canal as large Lake Superior waves crash against the shore in Canal Park on Friday.

Rip currents form when waves crash at the shore, creating water currents that flow away from a beach’s edge, according to the National Oceanic and Atmospheric Administration. These powerful channels ...