water

Learn dangerous fishes of the red Sea

The red sea is a unique tropical sea with a variety in beauty and in number the representatives of the underwater world. Its distinguishing feature is that it is located closest to Europe. It is not surprising that in the ports of international tourist centers of Egypt very often you can find comfortable yachts from Germany, Italy, UK, Malta, France, and other countries.

In the waters of the red sea there are over 1250 species of mammals, marine fish, corals, and other inhabitants of sea fauna.

The great Russian artist Bilibin, during his travels through the Red sea, called it “shark soup”.

Red sea, unlike other seas of the world ocean, has practically the same warm water temperature both on the surface and in depth. In the area of the Sudan at a depth of 2870 m recorded water temperature +50° C – that is truly “shark soup”.

Consider the main representatives of the red sea, which you are likely to meet. floating with a mask and snorkel, or diving on the diving:

Lionfish is a genus of marine fish squad skorpenoobraznyh. Got the name because of the numerous ray-like plumage in which there are poisonous glands. The poison in these glands is stored for a long time, even after the death of the fish.

Lionfish are a relaxed lifestyle, come out to hunt at dusk. Live in corals, caves and shallow water. Inadaptats on the hook.

Fish-urchin — sea fish living in Red sea, Indian and Pacific oceans. Named because of the presence of large numbers of spines and spikes. I live near the bottom at depths up to 150 m. fish Meat is considered poisonous. Continue reading

Marine aquarium

The first thing we need to think about is the size of your aquarium. Much easier to maintain in good condition a large volume of sea water than small. The minimum size of marine aquarium should be 100 x 50 x 50 cm the larger the aquarium you can afford, the better.

Technically, the organization of the aquarium with sea or brackish water is absolutely the same as freshwater. The main difference is only that in water you need to add salt. Since this water is in increasingly corrosive than freshwater, aquarium eliminated any metal objects. The destruction of the metal in the water can lead to poisoning of fish.

All items used for preparation of water and irrigation of the soil (buckets, colanders, spoons etc.), should be plastic. If you have an external thermostat, stick them to the glass and do not hang on the wall of the aquarium with the help of metal hooks with which they are sold. The same applies to the combined instrument heater-thermostat Even fixing of luminescent lamps to the cover must be non-metallic.

Water

For most of us to use clean seawater is not possible, because either we live too far from the sea, or the seawater is heavily polluted. Manufacturers produce salt for sostoyatelnoy sea water with the right balance of minerals that the fish need. You just have to mix the salt with tap water in accordance with instructions to obtain the required specific gravity of the final solution. Continue reading

What sharks are the most dangerous?

About the brutality of the sharks is legendary. People since ancient times afraid of sharks, because sharks of any size can be dangerous. However, among all the sharks you can highlight a dozen of the most dangerous, which can end badly.

Sharks are dangerous not only because they are strong, have sharp teeth and powerful jaws. The main danger lies in the unpredictability of the behavior of toothy predators: despite the fact that the habits of sharks are being studied for a long time, to predict with accuracy how the shark in any given situation, almost impossible.

Dangerous shark species

Today there are more than 450 species of sharks of different sizes, the smallest can reach a length of 17 cm, the biggest is up to 20 meters. But the real danger to humans represent only some species of sharks. Recent years have witnessed the most attacks on humans great white, bull and tiger sharks.

Great white shark

This shark is called “great”: in length it can reach up to 7 meters and weight up to three tons. The mere sight of this blood-thirsty predator is able to inspire terror. If you watched the movie “Jaws”, then you understand what is involved. The reputation of the great white shark is the most grim: in 2012, the year its victims were 11 people, three cases ended in the death of the victims. Continue reading

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