RIP CURRENT

A rip current is a strong surface flow of water returning seaward from near the shore (not to be confused with an undertow). It is often mistakenly called a "rip tide" or "riptide", though the occurrence is not related to the tides. Colloquially a rip current is known simply as a rip. Although rip currents would exist even without the tides, tides can make an existing rip much more dangerous (especially low tide). Typical flow is at 0.5 meters per second (1-2 feet per second), and can be as fast as 2.5 meters per second (8 feet per second). Rip currents can move to different locations on a beach break, up to a few hundred feet a day. They can occur at any beach with breaking waves, including the world's oceans, seas, and large lakes such as the Great Lakes in Canada and the United States.
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Noun
1. a strong surface current flowing outwards from a shore
(synonym) riptide
(hypernym) current, stream
(part-holonym) tide

A strong, rapid, and brief current that flows out to sea moving perpendicular to the shoreline.

rip-current
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