
+ F+ r2 c: Y7 O, P0 D' f% ^5.39.217.76One of Martyn's diving companions, Robbie Schmittner, in a huge flooded cave in Mexico. * v, l& Y" P q- S8 p* ?1 A* m
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1 U- Q# v, @8 x! O$ [% p" \9 `5.39.217.76Divers carry remote underwater flash guns to illuminate this image, taken in what is probably the world's biggest underwater tunnel, Weebubbie Cave beneath the remote Nullarbor Plain of western Australia.2 } f/ [( l9 P9 H, r0 _8 ?9 Q, d
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Divers often use guide-lines to keep them on track in the murky depths. Getting lost can be fatal.
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# ~4 m" s4 c3 Ftvb now,tvbnow,bttvbDeep and dark doesn't always mean cold: Jenny Pinder swims through the underwater passages of the Grotta Giusti Cave in Tuscany, Italy. where geothermal activity heats the water to an amazing 35 degrees centigrade2 @9 F! f2 D8 ~4 c/ H, N+ q
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9 q1 g* O" y# btvb now,tvbnow,bttvbIn another of Martyn's photos Helen Rider swims through the narrow confines of Taina Cave near Santo Domingo in the Dominican Republic. |