
3 K6 a, t3 J6 f4 I4 O/ M$ l5.39.217.76One of Martyn's diving companions, Robbie Schmittner, in a huge flooded cave in Mexico.
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' ^; f- U" V4 J$ A; a. o公仔箱論壇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.& ?9 h: W$ T# g- ^
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Divers often use guide-lines to keep them on track in the murky depths. Getting lost can be fatal.4 D1 u, f+ j! n8 i4 S' s
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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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/ n$ Y" x3 ^3 k3 y" WIn another of Martyn's photos Helen Rider swims through the narrow confines of Taina Cave near Santo Domingo in the Dominican Republic. |