Freshwater sharks
Most fatal collisions of man with bull shark was not in the sea and in fresh waters. Bull sharks inhabit, for example, in the lake Nicaragua. The Spaniards who first…

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Freshwater sharks
Most fatal collisions of man with bull shark was not in the sea and in fresh waters. Bull sharks inhabit, for example, in the lake Nicaragua. The Spaniards who first…

Continue reading →

What sharks eat?
Among the modern sharks should first be noted epipelagic planktophagous of being the largest members of the superorder, class, and all living groups participatng animals. These giants feed on similar…

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What sharks eat?

Among the modern sharks should first be noted epipelagic planktophagous of being the largest members of the superorder, class, and all living groups participatng animals. These giants feed on similar to baleen whales, filtering thousands of cubic meters of water through a “net launcher”. which has become Horny Gill stamens of these sharks. Remaining in the oral cavity Maso and Munro – plankton (except for especially large objects) and serves as food sharks planktophagous. Just today there are three such shark: giant whale, which the inhabitants of epipelagial, and largemouth tending to mesopelagial, for depths greater than 150 m.

whale shark

These sharks differ from individuals of other species by a number of morphological features associated with the specifics of the production of food. First of all here should stay on the morphology of the Gill apparatus sharks planktophagous, Except a kind of Gill rakers, they have a very large mouth, largemouth and whale sharks is almost final. Epipelagic sharks-planktology filter huge amounts of water and thus receive the necessary amount of food in places of mass accumulations of planktonic organisms,so the whale and especially of basking sharks clearly feed migration. Continue reading

Monkfish or fish with a flashlight

Monkfish, monkfish or European (lat. Lophius piscatorius) is a predatory fish squad udenstvertne. The name “monkfish” this was due to a very unattractive appearance.

The fish is edible. The meat is white, dense and boneless. Especially popular are “monkfish” in France.

Body length up to 2 meters, often 1-1. 5 meters. Weight — up to 20 kilograms or more. The anglerfish’s body naked, covered with numerous leathery outgrowths and osseous tubercles. On both sides of the head, on the edge of the jaw and lips fringed hanging shreds of skin, wiggling in the water, like algae, making it barely visible on the ground.

Body flattened, compressed in dorso-ventral direction. Head flat, broad, flattened on top, with approximately two-thirds of the length of the whole body. Continue reading

The Sevastopol marine Aquarium – Museum of the Crimea

In 1897, together with the biological station was founded Sevastopol marine Aquarium-Museum. The first building of the biological station has survived. Although, it is known that it was organized on the initiative of A. O. Kovalevskiy and the famous scientist traveler N. N. Miklukho-Maklai in 1871. Headed the Sevastopol biological station of A. O. Kovalevsky – the academician of the Imperial Academy of Sciences. He became its Director. It was A. O. Kovalevsky became the initiator and Builder of the new building of the biological station and marine Aquarium, on the site of the destroyed Nikolaev battery. The author of the project of the building was designed by Alexander Weizen. The station was built in the image and likeness of the biological stations of Naples and Villafranca. Subsequently, the Sevastopol biological station, expanding its efforts to study the flora and fauna of the seas, grew into the Institute of biology of southern seas named Kovalevsky. Also, was established the Prize named after A. O. Kovalevsky. Now This prize is awarded for outstanding achievements in the field of Parasitology and Zoology of the Russian Academy of Sciences. Continue reading

Fishing on the pond
Few people know the difference, the difference in the words "the pond", "lake", "reservoir", meanwhile, the understanding of each of these words leads to understanding fishing in these places, eventually,…

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Plastic ponds and reservoirs
Plastic reservoirs on the garden plots and dachas is today more a commodity than unusual. For example, plastic pools not only serve a decorative role, undoubtedly, beautifying the area and…

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