
) V% T& `9 i* Q1 V" K公仔箱論壇One of Martyn's diving companions, Robbie Schmittner, in a huge flooded cave in Mexico. tvb now,tvbnow,bttvb; j( r9 z% _; ]1 I5 u: x% v1 p
tvb now,tvbnow,bttvb; ]( h% n' ^! t: j
公仔箱論壇$ B$ ^6 U# x$ L% H5 R4 i8 o! o
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.
( C4 P M* t* @. a4 d# E5.39.217.777 M: x! I: {# c

& y q% G: a7 r# _1 [公仔箱論壇Divers often use guide-lines to keep them on track in the murky depths. Getting lost can be fatal.tvb now,tvbnow,bttvb/ f! [( y( i1 I/ }. T; V' H
8 ?/ r& G; J, @: L 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。( D, @% ]8 R9 E- T! `8 z! L
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公仔箱論壇" @" [0 {7 I: `0 K8 |8 r! o! ?3 m! ^
tvb now,tvbnow,bttvb* d9 E' x x9 S
tvb now,tvbnow,bttvb7 v( ~8 D$ c1 p
In another of Martyn's photos Helen Rider swims through the narrow confines of Taina Cave near Santo Domingo in the Dominican Republic. |