Scuba divers not checking air and run out and needed help. Dive within your limits!! In HD!

Duration : 0:3:41

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Scuba diving advanced skills demonstration

Demonstration of neutral boyancy, detaching and re-attaching a side-slung deco cylinder, regulator swap, switching to deco gas, deployment of an SMB & twin-set shut-down procedures.

Duration : 0:5:54

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