Typical predatory sharks
In the view of most people, the shark – ruthless, powerful and cunning predator, silently emerging from the depths and making rapid throw to the victim. Out of 460 species selachii many absolutely not fit such a description. Among the fish belonging to the superorder of sharks, a lot is quite small, less than a meter long (mustelids, barbed, cat).
Among them are the inhabitants of the seabed or deep water depths, with some extravagant form and the same name (“Chimera”, “brownies” and other “vermin”).
Some ocean wanderer, despite its impressive size, feed mainly on plankton. In the proposed section, we present just about the most typical kinds of predatory sharks, in full compliance with our preconceived notions about them.
What is a typical predatory shark?
Most of these hunters prefer the main production schooling fish (herring, sardine, mackerel, tuna) or cephalopods (squid). However, due to its large size they are a danger to humans. But on account of some of them many human lives.
The most typical predatory sharks have a streamlined fusiform body with two dorsal and one anal fin. They are excellent swimmers, chatanoga of them usually prefer to travel at low speed. But predator can instantly be transformed in the form of production and to accelerate sharply during the attack, making lightning-fast throws.
The color of these hunters helps them to camouflage themselves well. The lower body is often painted in bright, sometimes almost white tones, and the top has a more diverse range from bluish gray to dark blue or brown. Thanks to the unobtrusive style of swimming and the camo is great help to hide in the depths, predatory sharks are nicknamed “the shadow sea”.
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Species belonging in this group have typical dimensions in the range of 2-4 meters (some of the largest can reach 5-6 meters in length). They live mostly in warm waters all over the ocean and the coastal zone from temperate to tropical seas. The most typical predatory sharks have a good appetite. In the stomachs of specimens size 2.5-3 meters found in 50-70 kilograms of fish.
Some of them are able to hunt on a fairly high-speed prey – tuna and swordfish. By the way, as a result of this particular predatory sharks are a common catch of fishermen being caught to a tiered gear for catching tuna. While the commercial values have few species.
The most famous from a culinary point of view – having a “speaking” name soupfin shark. Her fins are widely used in far Eastern cuisine, and during the Second World war she for a time became the main source of fish oil and vitamin A for the economy and the U.S. army.
What features have sharks?
Predatory sharks have an excellent sense of smell. Sometimes they can smell prey (especially the blood) for several kilometers. Some occasionally hunt in groups. Like many other predators, they sometimes show quite considerable intellectual ability.
In addition to hunting in packs, may be mentioned their tendency to games. And some species that live among the reefs, scare the prey from one side of the vault, and then meet them at the opposite “hole” (like the huntsman who smoked a badger or Fox).
All of us consider the most typical predatory sharks are ready to bring independent living offspring. However, several species are viviparous. and the best part – ovoviviparous. This means that the female lays eggs, which is right inside her womb and developing embryos.
Hatched in the mother’s body babies sometimes eat nearby eggs. In a “clutch” or a litter can be from five to 50-60 eggs or brood. There are known cases, when hooked sharks were butchered on Board, and from their womb was taken out alive and fully formed young. Some of them later long lived in the aquarium. Newborn calves typically have a length of from 30 to 70 cm.
Many of sharks are characterized by great tenacity .
Where there are typical of predatory sharks?
Some species in addition to hunting fish and shellfish diversify their menu of different garbage. Living in the open ocean oceanic whitetip and blue sharks are sometimes closely follow ships, feeding on mainly waste from the ship’s kitchen – galley.
Recorded several interesting cases of such “hitchhiker”. Following in the Wake of the vessel Cougar caught on a hook was removed, eviscerated and thrown back into the sea. After this they continued for some time to swim, sometimes even grabbing the bait again.
In addition to open ocean spaces pertaining to the group, predatory sharks live close to shore, sometimes swim in the river (as some species of Requiem sharks), and sometimes spending most of the time in the tidal zone at a depth of 1-1. 5 meters (which is characteristic of sandy).
Sharks of the coastal zone quite often the perpetrators of the attacks on humans. While it is widely believed that the majority of such cases are provoked by human beings themselves. However, given the similar omnivorous species, and often their inherent aggressiveness, it can be assumed that some of them may well consider man as their “lawful prey”.
It should be noted that sometimes the behavior of predatory sharks is very different even within the same species. So, sand sharks near the coast of America is almost not seen in the attacks on humans. But off the coast of South Africa they attack humans quite regularly. And representatives of the Australian varieties generally included in the list of most dangerous sharks in the region.
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However, taken collectively the sharks of the oceans are not able to cause a person more damage than the shark tribe gets only one small fishing boat. At the same time, marine hunters are at the top of the food chain and perform about the same role as wolves or leopards on land.
So what are the most typical predatory sharks are indispensable for the ecology of ocean space and coastal waters. Some of them are rare or even endangered and listed in the international or regional Red books.
Read the first section of the article: white tip sharks – predatory guardian rocks.