
" h: f0 M4 G2 N6 p1 XOne of Martyn's diving companions, Robbie Schmittner, in a huge flooded cave in Mexico.
; q* P8 x1 Y) D; j' T5 J8 h公仔箱論壇
) e& L% d4 h, y; i8 d$ ^公仔箱論壇 os.tvboxnow.com3 j0 ^" n/ p5 D4 [9 ]
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.
$ s+ s2 _, S4 S: k8 |公仔箱論壇
8 I( g+ d5 g3 t; F/ h5 q4 t( jtvb now,tvbnow,bttvb
8 m* P& T a: PDivers often use guide-lines to keep them on track in the murky depths. Getting lost can be fatal.
0 D( m" I4 Y) b" o% }tvb now,tvbnow,bttvb
! ~! x& K( S) {0 Ztvb now,tvbnow,bttvb ; N( x4 H: ~) [; H
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
# o0 o3 _, R: ?, P H公仔箱論壇$ z# p2 i2 J2 p/ z3 t5 i

& h( K2 o+ w& l8 t& y8 j; K. iIn another of Martyn's photos Helen Rider swims through the narrow confines of Taina Cave near Santo Domingo in the Dominican Republic. |