Diving in the underwater caves

British Speleological diving instructor and photographer Martin Farr travels the world researching the most amazing underwater caves. Next month, they will try to team set a new world record for the longest underwater cave penetration.

14 photo + letter

1. Three divers are preparing to enter into an underwater cave Karvash Cenote in 2000, near Tulum, Quintana Roo, Mexico. (MARTYN FARR / BARCROFT MEDIA)

2. Jenny Pinder swims underwater in the narrow passage of the cave Grotto Giusti in Tuscany, Italy. The temperature in this "spa cave" reaches 35 degrees Celsius. (MARTYN FARR / BARCROFT MEDIA)

3. Phil Dotchon swimming between the mysterious conical formations underwater cave MIMOS, Mato Grosso do Sul, Brazil. (MARTYN FARR / BARCROFT MEDIA)

4. Helen Ryder demonstrates the buoyancy of the adjustment in the underwater tunnel in Dinas Rock Silica Mine in January 2007 in the Neath Valley, Uyuzhny Wales. (MARTYN FARR / BARCROFT MEDIA)

5. These pictures were taken by Martin Farr - the only British Speleological diving instructor. The next month Martin (pictured) will join the team of the best cave divers, who will try to set a world record, reaching the Pozo Azul cave, near Burgos, Spain, which no one had sailed. (MARTYN FARR / BARCROFT MEDIA)

6. In the UK - the home of Martin - there are several places where you can go diving, speleological, including Somerset, Derbyshire, Yorkshire and Sutherland. In his collection of pictures Veebubbi a cave in Western Australia, which is the largest underwater tunnel. (MARTYN FARR / BARCROFT MEDIA)

7. Speleological diving in the UK is very dangerous, but Martin believes that experience can produce true professionals in this area. "If you can swim underwater cave here, you can do it anywhere, - says Martin. - Walkways are narrow, there is cold and visibility poor, a lot of precipitation. Once you disturb the mud, and you will wrap a murky cloud, and you lose a sense of direction. And only an experienced guide will take you back to the surface. If you can overcome the caves here in the Brecon Beacons, no other underwater caves you will not be afraid. " (MARTYN FARR / BARCROFT MEDIA)

8. Although this type of sailing requires the availability of the equipment and the team, Martin may engage in speleological diving himself. "Explored the cave for the first time, I prefer alone. Speleological diving is very different from the usual. In caving diving conditions can be so severe that even if you close partner, it still will not change anything. Lost in the murky cloud of silt, you will need to think not only about themselves but also about their comrades, and this can confuse you. Sometimes it's better to be alone, then you do not need to worry more about someone. " (MARTYN FARR / BARCROFT MEDIA)

9. Martin Farr during his first scuba diving in a cave in China in 1985. (MARTYN FARR / BARCROFT MEDIA)

10. Local trainer Ronnie Valencia passes by a sign at the entrance to the popular Grand Senote cave in Mexico. (MARTYN FARR / BARCROFT MEDIA)

11. Helen Ryder swimming in coral cave at a depth of 30 meters in the Red Sea in May 2005, off the coast of Hurghada, Egypt. (MARTYN FARR / BARCROFT MEDIA)

12. Helen Ryder Taina swims through the cave, not far from Santo Domingo in March 2009 in the Dominican Republic. (MARTYN FARR / BARCROFT MEDIA)

13. Helen Ryder comes up from Port Il Ogof caves in June 2010 in South Wales. The next couple of meters in the cave is very narrow. In such places, be sure to wear scuba gear in the back and side. The women involved in this activity, not so much. (MARTYN FARR / BARCROFT MEDIA)

14. Jason Mallinson - leader of a team of divers, is going to set a new world record in Pozo Azul in early September this year. (MARTYN FARR / BARCROFT MEDIA)



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