The garden pond is do
The garden pond can be built using different materials. My first decorative pond was a fish tank. dug into the ground. I put two nymphs, the rhizomes of which were…

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Experimental rearing of Bester
Send your good work in the knowledge base simply. Use the form located below. Such work The fishery of sturgeon in the Black sea, the procedure for feeding and rearing…

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Hunting and fishing in the White sea
Before the hunters set out on the long journey across the ice of a small-scale. With them they dragged the boat easy - ledyankah for crossing cracks and openings. Such…

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Dangerous animals of the Black sea

Jellyfish immobilize or even kill their prey (small planktonic animals, fish larvae) with the help of special stinging cells: in them is hidden a capsule of poison and United with it, sharp and jagged spear, rolled into a tight spring. The spring unbends, and poisoned spear pierces the victim’s body when she touches the sensitive hairs on the surface of the stinging cells – a kind of trigger, or the trigger of this weapon. In the victim’s body of a hollow sharp tip of the spear breaks off, and from it, as from the tube, poured a paralyzing poison. A stinging cell is a disposable weapon, once fired, it bursts and dies.

Planktonic crustaceans sufficient one blow poisonous Darts jellyfish or sea anemones to stop flutter. Now imagine how sensitive hairs touch you, many times pull the trigger when touching jellyfish in the water!

Stingray, sea cat Dasyatis pastinaca . Stingrays – relatives of sharks, they also belong to the cartilaginous fish. and spine, and ribs, and the skull is made of cartilage. The sides of the Stingray there – only the back and belly, top and bottom.

Fortunately, sea cats are timid, afraid of the noise, trying to swim away from swimmers and there, where bathe children, they are not. And in the spring on sandy shallow water can often be found moving over the plain bottom,smoothly zmajevima wings of stingrays. Roamed and the ramp slides to the bottom and, raising a little cloud of sand by flapping of his wings, just covers things yourself, becoming completely invisible.

No one else harmful and dangerous in the Black sea, there is no stingrays, no man eating sharks or Portuguese ships or toothy Moray eels. Only the black sea shark – Katran Squalus acanthias – usually no more than a meter in length, is afraid of people and rarely comes to shore, holding the cold water of the deep. The danger he may pose only for fishermen, when they take this fish with his hands – both of dorsal fin spiny dogfish and labeled with large, poisonous thorns, so called prickly shark .

In the detailed lists of the fish species of the Black sea mentioned ordinary cat shark Scyliorhinus canicula . This small benthic fish, like many other animal species from the sea of Marmara, may appear in riboforce the area, and in the last century it was reported from only a single find of this species near the Crimean shore; even if it wasn’t a mistake, anyway, to live in the Black sea it is not able, because of the low salinity water. There were reports that in the last century in the Black sea swam a hammerhead shark Sphyrna zygaena . swordfish Xiphias gladius . and other major representatives of the Atlantic-Mediterranean fish fauna; to become settled, these fish can’t do it here. So, to meet a shark near the beach in Sochi, or diving in the Crimea is quite incredible.

Children often ask – do crabs bite? Do not bite, and plucked – not teeth, which they have, and claws. And only when we ourselves try to grab them. Large marble crab. or a stone crab can pinch your finger very painful; if it still grabbed You, never pull it – tear off the claw. Crabs let go of their paws and claws, as well as the lizard – its tail. It is better to just leave him alone, he unhooked himself.

Golden pond fish
This is perhaps the most paradoxical fish. Despite its longevity and wide prevalence in nature, on the market in the summer it is always in short supply. Let's try to…

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The use of marine fish - the ABCs of health
Many people know that fish is a useful product for the body, especially for men, but few can guess about the valuable properties of sea fish. Most people do not…

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