
1 q- p. H+ e3 [! r' Htvb now,tvbnow,bttvbOne of Martyn's diving companions, Robbie Schmittner, in a huge flooded cave in Mexico. tvb now,tvbnow,bttvb, }. {& I$ Q4 K. j" }
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& K6 y: g5 x/ E! x2 G/ u5.39.217.77Divers 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.& Z5 W# R+ {, [# Y' D, @* E# X
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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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0 B" d5 M4 w# G' ~9 T. e- I: Ptvb 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 centigrade
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; z% M7 T& v1 w$ g2 ]1 H, I公仔箱論壇In another of Martyn's photos Helen Rider swims through the narrow confines of Taina Cave near Santo Domingo in the Dominican Republic. |