|  tvb now,tvbnow,bttvb& Z2 t  N. ?  j  d One of Martyn's diving companions, Robbie Schmittner, in a huge flooded cave in Mexico.
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  TVBNOW 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。  V+ y# ~# w$ V" L& H! | Divers 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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  ( Y4 T  O  H3 f1 t5 }Divers often use guide-lines to keep them on track in the murky depths. Getting lost can be fatal.
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  % l% D* N( [) Q 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 centigrade5.39.217.77- l1 l3 g3 }- `$ d- f. Q/ m
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  公仔箱論壇1 u/ U* w, m! Y5 Z: m4 e In another of Martyn's photos Helen Rider swims through the narrow confines of Taina Cave near Santo Domingo in the Dominican Republic.
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