Marine currents for the recreational diver: understanding and handling them

Many beginner divers fear marine currents, but with correct understanding they become something enjoyable that adds to the dive.

Types of marine currents

Surface currents
They affect the upper layer of water, are linked to wind and waves, and can be avoided by diving at greater depths.

Bottom currents
They form at the edges of coral drop-offs and around islands and can be stronger than surface currents.

Upcurrents and downcurrents
They are rare but pose a real danger, especially in areas with complex terrain.

How to read the current before the dive

• Look at wave movement and foam on the surface
• Watch the direction of marine plants in shallow water
• Always ask the instructor or local guide

Dealing with a strong current

• Do not fight the current head-on; you will exhaust yourself
• Swim at an angle to exit the current instead of facing it
• If you cannot, use a safety buoy and wait for help

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A current you understand does not scare you. It adds dynamism and enjoyable excitement to the dive.