animals

Marine aquarium

MARINE AQUARIUM, a vessel for keeping marine animals and plants. Is usually large in size (200 litres), as its inhabitants usually larger than the inhabitants of freshwater aquariums.

Compared to freshwater marine aquarium is more time-consuming in use, since the secret of the successful maintenance of marine fish is the maintenance of conditions corresponding to their natural habitat. Often contain well-dressed inhabitants of tropical coral reefs. It is interesting to contain cold-water marine life. Such an aquarium should be in the summer especially cool.

Sea water is prepared artificially by division or from commercially available ready mixes for marine aquariums. It must have a salinity of 30-35‰, pH of 8.0 to 8.4, temperature depending on the content types. You need a constant control of temperature, pH, density (measured by hydrometer) and water salinity. Most dangerous is the accumulation of toxins in the water due to protein contamination. To combat protein contamination need a strong filtration system and water reclamation, as well as weekly substitution is not less than a quarter of the fresh water well preferirana water of the same density. The destruction of proteins contribute to aquarium lighting UV lamps and ozonation of water. Primenjajutsja special tools — catchers protein. Continue reading

The most amazing inhabitants of the water depths of the world

1. Fish-drop

One of the most remarkable inmates of the depths. Her look is so not attractive, and bizarre. As a rule, fish-drop lives at depths of 600-800 meters. There were also instances that prefer more extreme depths, namely 1,200 meters.

Prefer to live off the coast of Australia and Tasmania.

This fish is endangered. It is very actively caught and sold by fishermen. Of course, not palatability attract customers, and its unusual appearance.

The fish-drops no muscles, it is composed entirely of a gelatinous mass which density is close to water. It is this anatomical feature allows fish to swim at great depths without spending a large amount of energy.

This fish eats everything that floats by. Generally, its diet consists of molluscs and various.

2. Sea urchin

Some of the oldest animals. They inhabit the Earth more than 500 million years. Today there are about a thousand species of sea urchins. They are divided into two large groups, called: right and wrong. Continue reading

Most dangerous animals in the world

On our planet a few million living beings. Some of them are quite harmless to humans and even are his favorites. But there is a category of living creatures that are dangerous to humans. In tenth place small frogs that live mainly in Africa. They secrete on their skin secretes toxic venom, which when injected into the blood causing the arrhythmia, and with a weak heart may even stop it. A year is fixed to 10 deaths.

9. Sharks (great white, tiger, bull, etc.) — this well-known terrible sea beast is not even among the top five most dangerous. All because a year is fixed, only about 100 attacks on humans, and only 10-15% of them end in death.

8. Poisonous jellyfish. The body size of these species not exceeding 15 cm but poisonous tentacles can reach 4 meters. According to scientists, the adult jellyfish can kill up to 20-30 people.

King of beasts lion occupies only 7th place. The victims of these animals be no more than 100 people a year. Continue reading