It's a diver's worst nightmare, but as Martin Sampson explains, an entanglement can be dealt with if you follow this advice. Photographs by Peter Edwards
Technical diving instructor Mark Powell looks at the use of helium to reduce narcosis
Martin Sampson explains the importance of understanding tides
Footage of HMS Southwold resting in 68m off the coast of Malta had Gareth Lock hooked from the word go, and he set himself the target of diving this iconic wreck
The latest hot development in recreational and technical diving is the side-mount system. David Jones tried it out - and he's become a true believer. Photographs by David Jones
Martin discusses the use of the ever-popular technique of 'half-and-halfs'
Martin Sampson describes two essential rescue skills: alternate air source ascents and controlled buoyant lift
Martin Edge shows you how to capture strong beams of light to dramatic effect
Martin Sampson extols the virtues of praticing your surface rescue techniques
Technical Diving Instructor Mark Powell looks at how technical diving can extend your diving experience
Martin Edge explains how curves, circles and Snell's window can create an interesting composition
Martin Sampson explains how knowing how to use your compass properly is the key to finding your way
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These are the first underwater photos of Capernwray's new diving attraction - a full-sized passenger
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Christal Seas Scuba, based in Norwich, Norfolk, has recently bought a brand-new seven-metre Humber R
The PADI Village is getting a major makeover at Dive 2010, with the addition of a Seminar Theatre as
Experienced St Abbs dive boat skipper Paul Crowe has replaced his popular boat MV Topline with the l