Rare Shark Filmed in Japan 156
[TheBORG] writes "A Deep Sea Frill Shark, whose normal habitat is between 600 and 1000m, was found and filmed off the coast of Japan recently. Normally they're caught (found dead) in fishermen's nets. This 'living fossil' was probably so close to the coast because it was sick. In its poor condition, the shark was moved by marine park personnel to a seawater pool where they filmed it swimming and opening its jaws. The shark died a few hours later after being filmed."
1000m? (Score:5, Informative)
http://www.ussubs.com/faq/luxury.php3 a small deep submersible could be carried "piggy back" by the Seattle, allowing a small group of 2-3 people to board the deep submersible through a transfer lock and dive to depths of up to 3000 meters or more.
Re:1000m? (Score:2, Informative)
Re:1000m? (Score:2, Informative)
7. How deep can the submarine dive?
The Seattle 1000 is designed to dive to 305 meters, or 1000 feet. This is an optimum compromise that allows exploration at significant depth but also allows us to have very large viewports for exceptional visibility. If necessary, a small deep submersible could be carried "piggy back" by the Seattle, allowing a small group of 2-3 people to board the deep submersible through a transfer lock and dive to depths of up to 3000 meters or more.
Video shot of the shark (Score:5, Informative)
Re:1000m? (Score:4, Informative)
Re:1000m? (Score:5, Informative)
The deepest simulated dive is 685.5msw (meters of sea water) set at Duke Medical Center (Durham, North Carolina) by three divers in 1981. In cases like this, HPNS (high pressure nervous syndrome) is the limiting factor. HPNS is a syndrome of neurologic dysfunction with symptoms that include tremors, dizziness, vertigo, nausea, visual distortions and altered sleep. Tremors associated with HPNS have been reported as shallow as 128.72msw, but the deeper you go, the more likely HPNS is to occur. Eventually, it can prevent a diver from performing essential tasks during a dive.
Knowing this, you have to admire those sperm whales: mammals that are believed to be able to dive as deep as 3,000 metres and then go hunting for food at that depth!
Probably an earthquake (Score:3, Informative)
Re:1000m? (Score:1, Informative)
1000 meters are roughly 3000ft.
Even though one can dive around so deep , it is still a lucky incident to find any animal on an excursion like that.
Hartmut