depth

1 2 3 8

Presentation on theme

Sharks (lat. Selachimorpha) is a superorder of cartilaginous fish comprising eight teams, twenty families and about 350 species. Members of the superorder widely distributed in all seas and oceans, there are also freshwater sharks. Most species belong to the so-called real predators, some species, particularly whale, and giant deep-sea sharks, eat plankton.

For many millions of years before the planet appeared the first man, ruler of the prehistoric seas was a shark. The power of evolution sowed on Earth, countless forms of life that could not stand the severe tests and disappeared one after another, as the shark continued to exist. One prehistoric era is succeeded by another, have any amphibians, reptiles, birds, and mammals – the shark continued to exist. Pterodactyls – the winged reptile for millions of years plied the skies, disappeared from the face of the Earth. Dinosaurs-Triceratops, Brontosaurus, allosaurus and many other “saurus”, it is important chestvovali on our planet died out, leaving no trace. As the shark continued to exist.

About 20 million years ago in the sea scoured a huge Stingray, weighing over 100 pounds, and more than 25 different species of sharks, including sharks, reaching 36 meters in length. The length of these monstrous sharks was Opredelenie their huge teeth. Some of the teeth found in California, weighing 340 grams each and reach 15 centimeters in length, and seven – and ten teeth are quite common. They are triangular in shape and closer to the teeth of modern great white sharks that do not exceed 5-6 inches now with a body length of shark of 12 meters (maximum length). These teeth belonged to the ancestor of the modern great white shark the carcharodon, in huge quantities inhabited the seas. When they were first found in the seventeenth-century scientists, naturalists believed that this fossil bird tongues or teeth of serpents. They could not imagine that this shark’s teeth, and ascribed them to the mythical animal. Continue reading

Learn dangerous fishes of the red Sea

The red sea is a unique tropical sea with a variety in beauty and in number the representatives of the underwater world. Its distinguishing feature is that it is located closest to Europe. It is not surprising that in the ports of international tourist centers of Egypt very often you can find comfortable yachts from Germany, Italy, UK, Malta, France, and other countries.

In the waters of the red sea there are over 1250 species of mammals, marine fish, corals, and other inhabitants of sea fauna.

The great Russian artist Bilibin, during his travels through the Red sea, called it “shark soup”.

Red sea, unlike other seas of the world ocean, has practically the same warm water temperature both on the surface and in depth. In the area of the Sudan at a depth of 2870 m recorded water temperature +50° C – that is truly “shark soup”.

Consider the main representatives of the red sea, which you are likely to meet. floating with a mask and snorkel, or diving on the diving:

Lionfish is a genus of marine fish squad skorpenoobraznyh. Got the name because of the numerous ray-like plumage in which there are poisonous glands. The poison in these glands is stored for a long time, even after the death of the fish.

Lionfish are a relaxed lifestyle, come out to hunt at dusk. Live in corals, caves and shallow water. Inadaptats on the hook.

Fish-urchin — sea fish living in Red sea, Indian and Pacific oceans. Named because of the presence of large numbers of spines and spikes. I live near the bottom at depths up to 150 m. fish Meat is considered poisonous. Continue reading

Fishing for beginners.

As a nozzle for catching saltwater fish are great crabs, shrimp, mussels, sea fleas, sea worms, snails, animal spleen, and pieces of fish.

Typically large marine fish prefer to bite on the fry, fish fillet served, but also on crabs and shrimps (mackerel, sea cocks, Napoleon fish, flounder, etc.). Worms and maggots are suitable as a nozzle for catching smaller fish — sea bass, perch, goby, mullet, etc.

The lure of crab will attract primarily sea perch, wrasse, and goby. Crabs can be caught with hands in the coastal rocks. There is another effective method of catching crabs: tie to the edge of the twine or thick twine a piece of raw meat or fish and drop the bait between the rocks. Crabs will react to such a treat and clung to him. Crab meat can be stored in the freezer for a few days, before attachment to the hook it should be defrosted. Live crab can be stored for a short time in a bucket of cold water and seaweed in a cool dark place. On a hook baited with meat crab by removing the claws.

Shrimp is an indispensable nozzle for saltwater fish with a float and bottom fishing rods. Mined shrimp in the thickets of seaweed, as well as in freshwater reservoirs of the Far East. Obychno shrimp caught using nets, in which as bait, put the pieces of bread and meat. Nets set in the thickets of sea grass at a depth of 3-4 m Caught shrimp wrapped in wet cloth and stored in a cool place. To save the shrimp for a few days, they are boiled or salted. Shrimp skewer on the hook (for fishing) or using only the neck (for small). Continue reading

1 2 3 8
The problem of reducing the area of Maritime forests of the Mediterranean
Last week we told you that the European Commission on the environment from June 1 began to conduct stress tests of nuclear power plants located on the territory of the…

Continue reading →

Marine fish: breeding
Reproduction and spawning Reproductive behavior of tropical marine fishes is poorly documented because only a few species breed in captivity. However, some - such as clowns, gobies and seahorses to…

Continue reading →

General information about aquarium fish for beginners.
Aquarium fish, by definition, live and breed in the aquarium. For the most part, people have fish for decoration, but in some cases they are specially bred for sale. Ornamental…

Continue reading →