Diving and Age
Chronological age and physiological age can differ markedly, and each individual ticks to his own genetic clock.
- Read more about Diving and Age
- Log in to post comments
Chronological age and physiological age can differ markedly, and each individual ticks to his own genetic clock.
One of Australia’s most unique underwater events is facing a new challenge. The Australian giant cuttlefish mating aggregation—the world’s only large-scale cuttlefish gathering—has seen the first major decline in numbers since the event was protected from commercial fishing nearly 14 years ago.
Just knowing that Vikings started a settlement here a thousand years ago and that the first fishermen from Europe began arriving in the 1500’s adds to a sense of history that cloaks the Canadian province of Newfoundland and Labrador. It’s a sense that I’m acutely aware of on this sunny day in June on board the vessel, Ocean Quest, as the skipper, Bill Flaherty, navigates across Conception Bay towards Bell Island.
Having dived in plenty of spots around the world, I am always on the lookout for an unusual destination with unusual dives. It goes without saying that diving in the Dead Sea is not commonly found on the list of classic dives, and that’s what attracted me to it. The inland sea is located 425 meters below sea level. It is the deepest place on Earth.
Muck diving is now a recognized broad term for (generally) close up photography, usually in terrible visibility and a dark muddy bottom resulting primarily in low light conditions, which may or may not be polluted, too!
Announcements in June, 2006 reported the discovery of a possible new species of hammerhead off the US eastern seaboard.
Nearly seven years ago, scientists from Nova Southeastern University Oceanographic Center sampling sharks caught on charter boats off Fort Lauderdale and South Carolina stumbled on a startling discovery: some of the sharks that looked like scalloped hammerheads were actually a different, unidentified species.
Richard Connor of the University of Massachusetts Dartmouth tracked 120 males in the Shark Bay, Western Australia and found no evidence that dolphins form the groups to control either territory or sexual partners, suggesting their society is unusually open.
The researchers found no evidence that the large and complex social network in Shark Bay, comprising hundreds of bottlenose dolphins, is a closed group defended by males.
They also found no evidence that males defend smaller ranges or groups of females within this network.
Cuttlefish and their colorblind cousins, squid and octopus, see aspects of light, including polarized light, that are invisible to humans
Cephalopods are sensitive to the linear polarization characteristics of light. To examine if this polarization sensitivity plays a role in the predatory behaviour of cuttlefish, scientists from the University of Bristol examined the preference of cuttlefish Sepia officinalis when presented with fish whose polarization reflection was greatly reduced versus fish whose polarization reflection was not affected.
Learning to dive involves learning a new set of skills. Mask clearing, buoyancy control, regulator recovery and all the other skills that you learn on an open water course are essential for dealing with the underwater world. As a diver progresses through diving they learn additional skills such as using a drysuit, wreck diving or how to rescue their buddy. With technical diving there are again some new skills that need to be learnt.
The vessel rests at a depth of 80 meters and appears to be free of mud. According to some reports, it was carrying mixed cargo including steel products and as many as 1,000 bottles of cognac and 300 bottles of liqueur.
Raumanmeren Hylky-Team is a group of divers and wreck hunters who primarily search for shipwrecks in the Baltic sunk by German submarines during the First World War of which they have located around 20.
The divers say the vessel has remained quite intact. They will decide whether to try to raise the contents after closer examination.
Sulawesi is one of those places on nearly every diver’s bucket list. If not, it ought to be. A dozen years ago, people would have thought you daft to go diving there, much less build a dive resort in an area dominated by dark volcanic sand. Yet in Sulawesi there are nearly two dozen resorts vying for divers’ dollars, yen and euros.
Completely landlocked doesn’t necessarily mean that diving is out of the question. Austria is best known for alpine skiing, historical Vienna and delicious cakes, but also offers some really spectacular diving. Here, one can dive wrecks and walls, enjoying a rich aquatic life in lakes with great visibility.