The immeasurable diversity of nature on our planet: scientists consider to 3500 species of mammals and more than 850 000 species of insects. Despite the fact that already for many centuries is explored flora and fauna, and annually published reports of discoveries of new species, which find even in long inhabited and explored areas. So, in the early 30-ies of our century was known to 800 thousand species of butterflies, and by 1942 he already 900 thousand species. Even less studied is the life in the oceans, which often make sensational discoveries.
The existence in the seas and oceans are dangerous animals the people knew even in ancient times, although along with very real views were widespread tales of fantastic sea monsters. It was known about the danger of injections of some animals, on the toxicity of some marine animals by eating them for food and, of course, about large aggressive fish – the shark. Currently published a lot of papers devoted to the description of poisoning from the ingestion of marine animals in different parts of the World ocean. So, only in 50-ies of our century from such poisoning suffered tysjacheletij. According to the researchers, only poisonous fish there are about 500 species, most of which live in the salty waters.
By climatic and geographical basis distinguish polar, Northern, temperate, subtropical and tropical zones. The majority of our population lives in Northern and moderate climatic zones and therefore are not familiar with the fauna and flora of the tropics. Year-round abundance of warmth in them contributes to the rapid development of wildlife. So, in the Amazon region, has about 15 thousand different species of animals. Continue reading
The shark is one of the most amazing out of all those living on earth creatures. These fish had survived all kinds of ice ages and other disasters that were not in the teeth to the same mammoths and dinosaurs. It is not excluded that sharks will survive and the human race, so they are arranged.
In order to survive!
Interestingly, the body of the shark can regulate the salinity of the water, so one of the scientists foretold of impending disaster – desalination of the oceans due to glacial melting – the shark practically does not threaten.
Even the lack of oxygen not to confuse the predator. Because the shark at any time is able to “turn off” the part of the brain, and go into suspended animation to conserve energy.
These predators have a unique vision, is several times larger than a cat. A shark can see in opaque sea water at a distance up to 15 meters. Her eyes different from human frequency perception: we have 24 frames per second, the sharks – 45 fps. Besides, as it turned out, sharks see black and white picture, and perceive the world in color. Continue reading
For anybody not a secret that the home aquarium is not a cheap pleasure. Today many fans of home waters do not spare money on beautiful and safe decoration, expensive fish, aquariums and more. We offer to your attention the TOP 10 most popular types of pet fish in 2011.
Let’s start with one of the most famous fish – parrot fish. This fish got its name due to the resemblance of the beak on your bird. Many varieties and colors of marine parrots even more emphasize their analogy with parrots-birds. Its powerful beak for crushing corals, in search of the small invertebrate that fish eat parrot. Most of the sand near coral reefs is the result of the search for food of this fish. Having pinched off a piece of coral, parrot fish, crushes his powerful jaws, eating invertebrates, calcium and spitting the debris out.
Our next fish with a very unusual name surgeon fish . After the release of the animated film “finding Nemo”, children call these fish “Dory fish”. “Dori” belongs to the family Hirurgiya fish, which have sharp retractable small plate near the caudal fin, used for protection.Guiding your “scalpel” in the direction of the enemy they, therefore, attempt to get rid of the conflict. This is a very beautiful coral fish, mainly feeding on algae. Some representatives of the numerous “surgical” family eat plankton and detritus. Continue reading