
: Z( n9 D6 |& ?. U% t- i公仔箱論壇One of Martyn's diving companions, Robbie Schmittner, in a huge flooded cave in Mexico.
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" l2 ^9 a% s! ~* [" A% Fwww2.tvboxnow.comDivers 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.
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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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6 G; {& F: F3 z% M' f; Y& A/ Ytvb 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 centigradewww2.tvboxnow.com# d3 o5 ^) r# a" e4 w3 R9 N
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In another of Martyn's photos Helen Rider swims through the narrow confines of Taina Cave near Santo Domingo in the Dominican Republic. |