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Sharks
There are many sites well documented on the sharks; I underline simply a few of their characteristics: - They do not have an osseous skeleton as fish (it is cartilagineux), nor a swim bladder, with some exception, and their breathing openings have a particular shape. For these two last reasons, they are obliged to swim constantly. For this reason too, one can sometimes meets them in the pass where they can stay still with little movement and where they are oxygenated with less effort. - There are three family of sharks regarding the reproduction : two of them are oviparous animals (depending on the moment of the eggs hatch) ; The third one is viviparous sharks which are "modern" sharks (the "babies" birth alive, in the same condition than humans !) . So, mom shark can have (*) two distinct " maternities ": within each one of it, " the babies " devour each other with pleasure so that there will remain only two of them for the birth, well entrained !! Baby shark "dogfish" will spend... 9 months in these little transparent pocket hooked in the water.
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The largest sharks disappeared a long time ago and they do not have any more toothache. Such much the better for them
because their teeth are sold !! They
Peal of a shark. A bit raspy isn't ?
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There are 380 species of sharks; 20 of these species are dangerous for
the man, ie 3 ¨% of them. The largest of the sharks is the shark whale (up to 15 meters): he is inoffensive and eats plankton. Also inoffensive is the sand shark, which finishes in the " fish and chips "!! So much that its population fell of 90 % in 10 years around the USA (Today in English). According to statistics' of the " Florida Museum of Natural History ", approximately 100 people are attacked by sharks each year, the majority in hot water of Australia, South Africa and the USA. 15 to 20 of these attacks are mortals. |
Among them, one count the grey one (2 to 2,5 m), very powerful, the
tiger one (carcharinus, 3 to 3,5 m), the hammerhead (with an inordinately widened head that
would give it a better ability in measuring distances), the white shark which attacks even the
boats ! a " large white " feels the presence of blood to 400 meters (and one of eight meters can swallow a man
in entirety).
Comment : with these abilities, on understand perfectly that it is better not to attach fish fished to the belt ; better let them floating behind oneself |
Being cut to death by "Jaws" in water, environment unusual, we seem to be the epitome of horror; It is claimed he does not want to eat humans, "he the goûterait simply "(presumably to get an idea, like a surfboard?). But it does not alter the case. Are we less horrified by the unfortunate children and even adults - each year are torn apart by dogs? back to the shark. Some say that this is a nice animal and they are not wrong at all. All can be, even humans. At the moment, in early 2008, a man tells his joys with sharks and is in the water - of course - with a shark he holds in his arms, his ceaseless caressing, which seems the appreciate him making his folâtres mamours. They will see a day in watersheds with dolphins. This is rather sad. From there to try the thing with a great white shark off, there is not that I do not franchirai. What would it add? if they are not hungry, and if we do not represented, for any reason, a threat to them, there must be little chance that they want us to taste
In Australia, certain zones of bathe are supervised by helicopter and nets are dawned in water. In Durban also, on the coast of Kwazulu-Native, on the Indian Ocean side, the nets are 200 meters of the shore for attacks which often take place at the end of the afternoon. There is now an average of three accidents per year, seldom mortals. On the other hand, the accidents increased in the Cape Provinces Eastern and Western (National geographic, June 2000). It seems that the surfer run a higher risk because the sharks would believe their (animated) board is a beautiful fish or rather a tortoise, especially if, sitting onto, they lets hang their feet in the water. The summer 2004, in Australia, a surfist was devoured by sharks, seemingly without any warning (hereafter, another assumption quite as probable, because this unhappy was in their territory. Here is the point, for the moment .. :
Well, at a TV documentary (July 8, 2001, Canal+, France) with the shark photograph from the National Geographic, they showed
us an attack of shark on a surf board !! and what's more, we could see the shark jumping in the air to drop on the board
like a dolphin (we think generally that the shark goes always from the deep water.
A couple of fans have watched this scene on open sea near South Africa, where the white shark
is hunting sea lion in winter, due to the lack of fish in this period.
On right hand, sharks travel long distances to feed on with seabirds gathered at the time of birth. |
A friends of mine encountered one in a narrow passage; surprised and feared too, it drew an arrow randomly in the rock. The shark made a U-turn, either by the noise of the arrow, or because it found the intruder too large. We retained this last version, the man being large and corpulent. I had myself a bad experience with two large sharks (3 m), lately identified a little too close whereas they were oxygenated in a pass, still. One do not see very far away under the water and I believed that they was two beautiful fishes !! It too me a long time to recover the fear. |
As for the terrified man, it butchers approximately 100 million sharks each year, including 2,5 million for the sport. A great majority is fished by the Asian ones which cuts their 2 fins (3000 FF/kg) and reject them to the sea where they will not survive (Today in English, 11/99).
Good recipes.
The shark blood. Surprised by an engine failure of
their aluminum boat, three fishermen of the small
Nauru republic experienced
an eleven days drifting over 1600 kilometers; they survived by catching
tuna and a shark; the blood shark allowed them to drink somme liquid.
31 01 08, "Les Nouvelles Calédoniennes."
-- Queensland, Australia. 29 01 08. A young fisherman had just cast its sized in
the boat, a 90 kg shark, when it abruptly swung back and closed its jaws on his
calf to the bone. The rescue helicopter had to cut the head of the shark to make
it release its bite.
-- 09 04 08. A 16 years Australian surfer died nearby Brisbane, east coast of
Australia, bitten in the legs and body. "Les Nouvelles Calédoniennes."
- A surfer has
died after being attacked by a shark. Half of his board was bitten off. The
victim was left with a serious wound to his leg. he died from his injury.
- Australia, beginning in November 2010: Elyse Frankcom, a young woman attacked
by a shark than 3 meters was saved by a man who caught the animal by the tail
until he let go his prey. Bitten on the hip and buttock, she Transported by
helicopter and underwent six hours of surgery. A tooth was stuck in his
buttocks. His savior has just said he wanted it to go well. She wrote on her
Facebook page: "If I'll get Attacked or die, at least I'll die happy and I love
doing The Thing."
RULE : to look around oneself and especially avoid the pass and the deep outside of the reef, mainly if one is not a professional or at least used to for long, nor not surrounded by plungers, because "frightening encounters" are not the same as the seemingly peaceful small white point, swimming around in the lagoon. |
It's so rare
hilaring.
Nearly one of the most popular beach in Sydney, Cronulla beach, a small one
metre shark was found in a pool, thrown inside by a big wave! The pool is
installed in the rocks, on the seafront, and reports Rotyn Cole, swimmers come
very early in the morning, when it is night. Maybe they have not seen anything
that day .. 15 07 08, "Les Nouvelles Calédoniennes."