Surge
Definition
Surge is the back-and-forth motion of water caused by wave energy, often affecting shallow dives near shore.
More on Surge
Surge results from waves pushing water back and forth beneath the surface. It is strongest near shore and in shallow water, particularly during surf entries, exits, or reef dives. Divers can be pushed off course, stirred into rocks or coral, or have trouble maintaining trim in strong surge. The best response is to stay streamlined, time movements with the surge, and avoid resisting it. Planning dives during calmer conditions minimizes its impact.
Frequently Asked Questions
Surge can be felt down to 30 feet (10 meters) but usually weakens with depth.
Wave energy moving through water, especially in shallow areas, causes surge motion.
Stay close to the bottom, streamline your body, and move with the rhythm of the water.
It can be. Surge can push divers into hazards or exhaust them if they fight the motion.
Yes. Dive at high tide, away from surf zones, and choose calm weather conditions.