-- Rip currents flow in very erratic patterns, not in steady courses as previously believed -- which may help explain why they can be so dangerous even for experienced swimmers. Oceanographers have discovered the behavior by tracking the motion of colored dye added to a wave pool generating rip currents.
ScienceDaily (2003-05-27) -- As people flock to the beach for Memorial Day weekend, the rolling waves and blue seas could hide a deadly threat: rip currents. But a better tool for predicting the currents – which cause more deaths on average each year than hurricanes, tornadoes, storms and lightning combined – could be available soon.
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