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What is a Shark?

This term there are other uses, see Shark (disambiguation) .

Sharks (lat. Selachii ) [1] is a superorder of cartilaginous fish ( Chondrichthyes ) belonging to the elasmobranch subclass ( Elasmobranchii ) and has the following distinctive features: elongated body, more or less torpedo-like shape, large heterocercal caudal fin, usually a large number of sharp teeth in each jaw [2] .

Skeleton

The skeleton of sharks is markedly different from the skeleton of a bony fish — it has no bones. and it is fully formed from cartilaginous tissue. In the skeleton there are the following departments:

Axial skeleton — the spine. educated numerous ampicillinum cartilaginous vertebrae ;

The skull with two divisions — the brain box and the skeleton of the mouth and Gill apparatus;

The paired appendages and girdles — pectoral and pelvic fins ;

Unpaired fins are, as a rule, caudal, anal and two dorsal fins. Continue reading

Jig-bait for fishing predator

So, shads. This type of jig baits I prefer for catching of a predator in the fall. All the shads, by their behavior in water at the time of posting, can be divided into two groups – those that have their own active games and those that their own active play have not. These groups of lures in the literature have their own names. Baits with active own game, producing at the time of posting powerful vibration refers to the group – Action Shads. and bait, not having a clearly defined game under water, called – No Action Shads. A legitimate question arises – what are the best types of lures can catch the predator, to “active” or “passive”.

The answer is – it depends on the state in which today is a predatory fish, and the fish depends on different factors from water temperature, atmospheric pressure, etc Therefore, going fishing, I take lures of both types, and by experimenting, find the most suitable for today’s fishing. But, if you generalize and simplify the issue, we can recommend a rough rule – the more today predator, especially since it is located to the lures with active own game, and Vice versa. And yet, the colder the water in the pond, the less likely the bait will prefer predatory fish.Here pike is almost always better responds to the shads with the active game. As for the size of baits. I noticed that by the fall of the game is to large models. Continue reading

Sharks – fear or admire?

The recent incident in Egypt has attracted a lot of attention to the sharks. And opinions on the causes of attacks on people were divided: some believe that the steel base of a violation of the ecosystem, as well as the problems with “health” (well, at least one of the attackers) predator; the adherents of this theory believe sharks are not dangerous to humans; others think that sharks are always aggressive and, at “the meeting”, the probability of attack is 90%.

Sharks frighten and fascinate, and delight at the same time. According to the results of numerous studies of behavior of these predators, the experts recognized that most species of sharks are not dangerous to humans and even those that exhibit increased aggressiveness, does not consider the meat people “tasty” food and, as a rule, people do die from the loss or contamination of blood.

Returning to the incidents in Sharm El Sheikh in the end of 2010 you can see this. Think for yourself, if a shark was hungry enough for her hand to eat? Especially when there so much blood in the water, she had to get mad and lash out with even greater aggression. However, almost all the victims managed to get out of the water.

Also many of you know about the white shark attacks on surfers. After all, a well-known fact that the largest predatory fish confuses people with his lumimyrakassa – seals. Here is an example of the attack by two great white sharks on a surfer: Continue reading

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