A team of international experts, who arrived at the Egyptian resort of Sharm El-Sheikh after a few cases of shark attacks on humans, concluded that the coast, swim at least two predators that used to eat human flesh.
This opinion was voiced by experts after carefully studying the nature of the wounds on the bodies of the victims from shark tourists. According to them, the predator even belong to different species. If Russians and Ukrainians attacked korotkaia Mako, the deaths of German women over the weekend blame white tip reef shark. According to scientists, this is the worst scenario that they assumed, as one individual it would be much easier to catch.
While biologists believe that the Cougars, who were recently caught off the coast of the red sea, the people did not attack. It turns out that the shark-killers are still on the outside.
Meanwhile, scientists are trying to understand why fish that very rarely attack people, to change their behaviour. According to the expert from the United States, Director of the Florida program for shark research George Burgess, now the coast is examined in order to find any violations of ekosistemy the red sea. Continue reading
Every water pool on the farm, at least it was built for a different need, you can always simultaneously be used for breeding fish. With some attentiveness and care works for nothing will never disappear. If you are inside of ownership of a lake, right by the settlement of his juveniles you can increase the amount of fish, and consequently, and profit from it. In the pond gully on the steppe, you can make no ex-here before fish. From flowing through your ownership of the river you can divert water to the lowland, where to arrange a number of ponds for proper fisheries management. Ponds can be constructed in a meadow, but more often they lay in wastelands, swamps, etc., unfit for any other purpose and are quite suitable for ponds. Subsequently, the bottom of the ponds, which fish usually do not deep, turn in arable land: the silt deposited from the water, is an excellent fertilizer, and this gives the pond a few years a fine crop of oats and other breads. On the other hand, if after harvesting of oats to fill the pond with water again, bred in a pond rich in food for fish, causing it to quickly feed that the farmers just need more. Continue reading
Our planet is inhabited by almost 20 thousand species of fish. About 1/10 of them are commercial. They give people a lot of valuable products: food, medicines, fertilizers for the agriculture, pet food, industrial oils, raw materials for light industry.
To move in the water, have to spend a lot of energy. Nature took care of the fish, giving their bodies zaradougou streamlined shape. The speed of the fish (scombridae, tuna, sharks) in its form and speed resemble that of a torpedo. The fastest fish is considered fish-sailfish, swordfish and Marlin, which reach speeds of up to 130 km/ h. The rate of freshwater fishes is typically lower, but in critical moments of his life, in the moment of impending danger or in the event of an attack on their prey, they can take a short term shot at a speed of 1-2 km /h. Good speed swimmers usually are found in rivers with current (sabrefish, Chub, nase, Dace, salmon). The speed of the fishes living in stagnant water far below, but they are more nimble, nimble (carp, bream, Rudd). Continue reading