Ornamental fish pond: types, content (articles)
However, the presence of fish in the pond is desirable, but not necessarily, because usually has little effect on the maintenance of the purity of water. When choosing fish are…

Continue reading →

Ornamental fish pond: types, content (articles)
However, the presence of fish in the pond is desirable, but not necessarily, because usually has little effect on the maintenance of the purity of water. When choosing fish are…

Continue reading →

inhabited

Life in the deep sea

The sea always attracted people to him, maybe even more than the sky. The world ocean is the habitat of a huge number of plants, fishes, sea animals, including mammals. There are several zones of ocean life. Most inhabited the upper water column, down to 300 meters, as this is the most illuminated part.Area at a depth of from 300 to 1000 metres is the name of the region of penumbra. At a depth of over 1000 meters there is an absolute darkness and intense cold, there are no plants.

The pressure at great depths is very high, at a depth of 3800 m, the pressure is 400 kg cm3 and at a depth of 10900 m – already 7250 kg cm3. The denizens of the deep in different ways have adapted to these difficult conditions. The only food source of deep-sea animals – the corpses of the inhabitants of the upper part of the ocean and bacteria.Their eyes are either absent or reach a high degree of development they are sometimes of enormous size, are often placed on the lateral appendages of the stems or telescoping, is provided with a lens system. So, the eyes of the coelacanth fish have a cylindrical shape, this allows it to see distant objects. Continue reading

The forum of the city of Zhitomir
Fish, types of aquarium fish Why not it would be bad to have an aquarium In today's classical world, many people is under constant pressure and in stressful condition. The…

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Saltwater aquarium: aeration and decoration of Your underwater world
Any laminated frameless aquariums do not cause fear. In aquariums with a metal frame even under a layer of protective paint may cause rust. Therefore, the top corners of the…

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