
5 l# T$ y+ c# y, v: s; eTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。One of Martyn's diving companions, Robbie Schmittner, in a huge flooded cave in Mexico. ' O2 b2 h. C& T% M% u
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6 L& b* R4 q: @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.
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Divers often use guide-lines to keep them on track in the murky depths. Getting lost can be fatal.
4 e8 I% p9 M& A c& gTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。/ ^# d2 b, ]; H- y# T; \& r" E0 R6 U
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Deep 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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In another of Martyn's photos Helen Rider swims through the narrow confines of Taina Cave near Santo Domingo in the Dominican Republic. |