! z, K! C _/ V) q+ O0 Vtvb now,tvbnow,bttvbOne of Martyn's diving companions, Robbie Schmittner, in a huge flooded cave in Mexico.
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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.公仔箱論壇% ?' _0 b. d- H* r4 z6 m0 M
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Divers often use guide-lines to keep them on track in the murky depths. Getting lost can be fatal." O/ b6 {" c8 ~) c2 h9 Y
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/ q: [2 B, a2 G9 ^ f! g! @tvb 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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9 }: X. Q& q! k9 W0 OIn another of Martyn's photos Helen Rider swims through the narrow confines of Taina Cave near Santo Domingo in the Dominican Republic. |