Swim-Through
Definition
A swim-through is an underwater passage or arch that divers can safely swim through, often found in reefs or wrecks.
More on Swim-Through
Swim-throughs are natural or artificial openings—such as caves, arches, tunnels, or corridors—that allow divers to pass through. They offer thrilling experiences and unique perspectives of the underwater landscape. When attempting swim-throughs, divers must ensure there is adequate clearance, visibility, and no entrapment risks. Proper buoyancy control is crucial to avoid contact with the environment, which could disturb marine life or damage delicate coral.
Frequently Asked Questions
Some are, especially wide and short passages with clear exits. Others require advanced training due to confined space or low visibility.
Check visibility, ensure you can see the exit, signal your buddy, and maintain neutral buoyancy.
Yes, many fish and invertebrates use swim-throughs as shelter or hunting grounds.
Poor buoyancy, entrapment, silt-outs, and panic are key risks—avoid tight or unfamiliar passages without proper training.
Often yes. Many are dark or partially enclosed, so a torch improves safety and enhances visibility.