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CONTENTS
SPRING 2012
Stephen Frink
photographed this
great hammerhead
shark (Sphyrna
mokarran) in the
waters off Bimini,
Bahamas. He used
a Canon 1Ds Mark
III in a Seacam
housing with a
single hand-held
Seacam flash, Canon 16-35mm II lens set at
35mm, ISO 160, manual exposure, shutter speed
1/60 sec at f/5.6.
60 The CaymaN
ISlaNdS
TexT and PhoTos by
alex MusTard, Ph.d.,
and sTePhen Frink
With 365 dive sites, world-class
walls and a marine park celebrating
25 years of protected status, the
Cayman islands are a diver’s dream.
68 The deNIzeNS of
SouTh oz
TexT by hoWard hall /
PhoTos by MiChele hall
From camouflaged dragons and the
ocean’s most iconic apex predators
to whiskered mischief-makers and
tentacled giants, south australia’s
underwater inhabitants are
unforgettable.
74 maTTeRS of
The heaRT
Aging, Wellness and
Fitness to Dive
by PeTar denoble, M.d., d.sC.
We’re all getting older, but our
eagerness to dive is undiminished.
This report by dan’s senior director
of research provides insights to
help us continue diving for years or
decades to come.
80 RebReaTheRS:
booN oR baNe?
by JeFFrey bozaniC, Ph.d.
as the popularity of rebreathers
grows, recreational divers want to
understand the benefits and the
hazards. rebreather expert Jeffrey
bozanic gives us the facts.
84 oCeaN VIewS
2012 PhoTo CoNTeST
GalleRy
Winners and favorites from
thousands of entries
immerse yourself in some of
this year’s greatest marine
images. The next best thing to
being underwater, these frozen
moments in time celebrate our
magnificent blue planet.
4
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SPRING 2012
The Magazine of Divers alerT neTwork
AlertDiver.com / SPRING 2012
SOUTH AUSTRALIA:
WHITE SHARKS AND BEYOND
OCEAN VIEWS
PHOTO CONTEST
CApTIVATINg CAYmANS
AgINg, WELLNESS
AND DIVE FITNESS
CAN mARINE mAmmALS
gET BENT?
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O c e a n
V i e w s
2 0 1 2
11TH PLACE
LARVAL SQUID,
COAST OF KAILUA KONA, HAWAII
BY JOSHUA LAMBUS
Nikon D80, 60mm macro lens,
1/60 sec at f/40, ISO 320, Ikelite
housing, Sea & Sea YS-120 and
YS-90 strobes, www.jlambus.com