Marine aquarium
Marine aquariums differ much more sensitive to any changes in the environment. The most important parameters for saltwater aquariums are pH, salinity and temperature. Occasionally the nitrite and ammonia will…

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Salad "Fish in the pond"
Delicious, delicate and light salad "Fish in the pond" will decorate any holiday table, especially served in honor of the first spring holiday — 8 March. It would seem that…

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came

Sharks: The story of a bookplate

Ten years ago, on the island of Sipadan in Malaysia, I took a picture of my first shark. It was almost certainly a shark-Zebra, Stegostoma fasciatum. The current was carrying us along sheer walls, and she, mysterious and beautiful, gleamed in the distance. My heart jumped to somewhere in the Adam’s Apple, I quickly raised the camera and took this blurry picture.

Shark-Zebra

The shark disappeared into the depths, and I got a new hobby — a passion for cartilaginous fish. Have devoted a considerably long time, wrote some articles , even led a couple of sections in Wikipedia. Traveled to different corners of the planet to dive with them.

Of all the sharks I liked Fox, or as she is known in English, thresher. She is like a shark-Zebra with long tail and harmless disposition. Graceful, smooth and swift. Without the aura of celebrity, without the reputation of a ruthless killer. So to speak, a humble toiler of the ocean depths.

Thresher shark (Alopias vulpinus, Thresher shark). Illustration from the book “A field guid to the sharks of the world” Continue reading

Dangerous animals of the Black sea

Dangerous animals of the Black sea. Medusa Aurelia. Medusa kornerot. Stingray. Black sea Scorpion. Weeverfish. The Scorpion visible.

“Training project in geography” – the rating of the project. The performance criteria of protection. The idea of the project. Evaluation of the project. The tasks of the project. Negative trends in the industry. The construction of a metallurgical plant. The urgency of the problem. Problem. Importance in the economy of the country. Projects of students. Develop your own ways to resolve the problem.

“”Far East” grade 9″ – the Climate of the Far East. Only on the Kamchatka Peninsula more than 20 active volcanoes. Coal reserves in the far East. Biological resources. The Topography Of The Far East. Internal water. The area of coniferous-broadleaved forests. Ores of nonferrous metals. Natural conditions and resources of the Far East. Natural resources of the Far East. Natural areas of the Far East. 18 oil and gas fields. Continue reading

Stocking ponds

In recent years significantly increasing the number of owners of garden and country sites. For a full life, you need a pond, even small, so many owners of household plots, want it, and who has, I want to equip it filtration system to keep the water clean and fish healthy.

Benefit from a small pond on the land trudnootdelema. In aesthetic terms, a pond inhabited by ornamental and aquarium fish, with aquatic vegetation selected together with a correspondingly designed area can become a place that is most attractive, bringing peace of mind and satisfaction.

Microvolume can be used for economic purposes: the cultivation of pond fish for their own consumption or sale, as well as for the organization of fishing.

The choice of directions of use of the reservoir, of course, depends on your ability and desires. Considering a variety of options for the use of small water bodies, fish farming is a promising sphere of application of forces and means, it is an interesting, pleasant and useful activity which brings money. Continue reading

Red-tail catfish, or Phractocephalus
Practieal, or redtail catfish is a beautiful fish, but very large and predatory. In order to contain such a catfish, you should have an aquarium of at least 500 liters.…

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Scientists have found thousands of new species of amazing marine animals
17 more than 650 new species of marine life discovered by scientists during the international project "Census of marine life" . In different corners of our planet with the help…

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