
) }4 T" L4 Z- ?9 z) ]* n' w8 F5.39.217.77One of Martyn's diving companions, Robbie Schmittner, in a huge flooded cave in Mexico. 0 p. J2 }4 T# B7 L. b5 k- i `
! h9 M l: h4 G" {公仔箱論壇 tvb now,tvbnow,bttvb( }0 i* n4 t+ k+ ^, k) \
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.
# E% |# Z( y( M8 C
6 [- C' z% R" p. v/ |5.39.217.77 tvb now,tvbnow,bttvb; w4 ^* @+ r2 U) e* }, S- N
Divers often use guide-lines to keep them on track in the murky depths. Getting lost can be fatal.公仔箱論壇3 R. }4 `3 _# [+ n( L" D/ M" x
- M% t7 q2 R' V% p3 N' ytvb now,tvbnow,bttvb 公仔箱論壇1 |) F; `, z- `& U0 w, c
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
8 v+ _, t" {- H# \1 o
2 I' Y5 D* {* R$ @! |公仔箱論壇
, B) g/ t1 E- j# H4 C( N5.39.217.77In another of Martyn's photos Helen Rider swims through the narrow confines of Taina Cave near Santo Domingo in the Dominican Republic. |