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
Algae is a very important part of aquarium because many aquarists immediately abandon their hobby because they are unable to overcome the invasion of these plants. In most cases ososki, leading to subsequent problems with algae, are associated with earlier stage of the installation of the aquarium. In fact, in the aquarium will not have algae problems if you follow a few basic rules.
Even if – with the best intentions – You don’t want the appearance of algae in Aquarama, You must show proper respect to them. If You will better know the nature of the algae, you will be generally easier to deal with them.
Algae – the old vegetation on the planet
About 3 billion years ago, blue algae appeared on earth and became the first vegetation on it. It is the oldest of living organisms, the well known chlorophyll – crusadea the substance that gives green color to the leaves and photosynthesis, through which nutrients can be done with the help of light, one of the most outstanding phenomena in the creation of the world. The appearance of blue algae was closely associated with the growth of oxygen in the atmosphere. From it was formed the ozone layer which in turn is protected from the deadly UV rays, making the residents of water poverkhnostyami. Continue reading
In Crimea there are favorable conditions for development of pond fish farming. The article says about his condition today: the number of reservoirs, production of fish and etc. And also about future plans, including the establishment of enterprises for processing of fish. Describes a new form of semi-intensive fish-breeding, which crossed the farms of the Crimea. The ways of extension of deadlines fresh fish.
THE PRODUCTION, POND FISH, AND ITS DEVELOPMENT PROSPECTS IN THE AUTONOMOUS REPUBLIC OF CRIMEA
The development of pond aquaculture is the main area in fish farming to ensure sufficient number of quality fish products.
It is known that all water bodies in which there uvodna (local) or the universe ichthyofauna, fisheries are objects. Water features are one of the natural bases of the economic development of the fisheries complex of the autonomy that performs its task in providing a complete nutritional products that promote his employment, has recreational value. In Crimea for keeping pond fish farming (breeding, pond fish production, recreational and sport fisheries) used 340 water bodies total water poverhnosti ha. Continue reading