Rus Articles Journal

Also I studied reptiles sea...

Hurrah! you arrived to the sea! Let`s assume, for definiteness, to Black. I suspect that parents would prefer “to be fried“ quietly on the sun, having released from essential cares. But children, having much gamboled in warm water, soon begin to miss and require to themselves attention. And here it is possible to make “knight`s move“ - to offer it the real research expedition. Be not frightened, you should not pack a huge backpack and to drag on yourself tent. It is enough to pass across the coast and to look at what will occur in the path.

It is unconditional, cockleshells will be most numerous “copies“. To be exact, sinks of mollusks which are divided into two big groups: two-fold and Gastropoda.

Clams , apparently from the name, have the sink consisting of two halves - shutters. Gastropoda mollusks, or snails, have a sink in the form of a conic or flat spiral. The best-known Black Sea two-shutters are mussels, oysters and serdtsevidka.

of the Mussel , a recognized Black Sea delicacy, are black clams. Their extended shells for certain will get to you. Mussels have special glands allocating threads (bissusa) by which the sink is attached to soil. You do not seek to tear off a mussel from its residence. As well as other two-shutters, they are natural filters and play a huge role in purification of sea water. Mussels lodge racemose colonies. It is possible to try to find also live mollusks, having investigated some boulder which is sticking out of water. The age of a mussel is counted on number of strips on a sink surface.

the Black Sea oysters have sad destiny. Once they were great variety, but from - for deteriorations in conditions of dwelling now they meet very seldom. Size of a sink of an oyster usually 6 - 8 cm.

of Serdtsevidki , or kardiuma, have a sink in the form of a heart with the radial edges which are often decorated with thorns or scales. They possess a strong wedge-shaped leg and with its help not only move and are quickly dug in in soil, but also jump up on several centimeters over a bottom surface when they are threatened by danger.

From Gastropoda loud fame was won by a mollusk of a rapan. It is the largest Black Sea mollusk. Rapana - the predator which is incidentally delivered from the Pacific Ocean very quickly bred and extended in the Black Sea. Oysters and mussels became its favourite food. Still the rapana is called a komodny mollusk because its beautiful sink became one of favourite souvenirs which vacationers usually bring from the Black Sea resorts as memory of rest.

and on coastal stones can be found

In a zone of a surf mollusks which sinks remind a cap. Call them sea saucers . They live on rocks, at the water surface. When water recedes, saucers densely nestle on a stone. Just like that you will not tear off them. Edges at a sink sharp and firm, and over time in a stone the pole is formed. When water covers mollusks, they move off in searches of food, but is far from the lodges - do not crawl away poles and as soon as water recedes, come back home.

Walking along the coast, it is worth paying attention to the seaweed which are thrown out by a surf. As a rule, they serve as a shelter for small Crustacea. Most likely, povoroshiv seaweed, you will see of crustaceans - bokoplav which make the sharp movements by tail part of a body, trying to hide from direct sunshine in a shadow. In small puddles, at the edge of water, on a surface of stones they move on one side, from here and the name - bokoplava. However usually bokoplava float normally - a back up. These crumbs possess a surprising spring ability - having sharply straightened a back, can cavort centimeters on thirty. At night, in search of food, bokoplava get out to the beach and travel quite far from a water edge.

Worthy representatives of group of Crustacea are crabs - nice beings with solid claws. Most often it is possible to meet a grass crab. He very quickly runs - sideways, as well as it is necessary to a crab. In shallow gulfs of a grass crab it is possible to see wandering not about a bottom, and about a dense grass. However, it easily moves also on the vertical wall which acquired small mussels and balyanusa.

of Balyanusa , or sea acorns, deserve special attention. They are representatives of Crustacea, usonogy crustaceans. It is possible to see their lodges reminding low turrets of white color often on stones (at a surf edge) or on large sinks of mussels and oysters. Cunning balyanusa lead a settled life, being attached by a wide sole to a suitable substratum.

during your expedition surely observe jellyfishes . In the Black Sea there are no jellyfishes dangerous to the person, but it does not mean that it is necessary to be enough them with hands and to drag on the coast. Most likely, two representatives of this type of animals will get to you: Aurelia and Black Sea kornerot. Aurelia can be recognized by four sirenevato - blue circles on a dome. Black Sea kornerot - a whitish jellyfish with the violet edge of an umbrella. This jellyfish nevertheless is capable to burn with the special strekatelny glands. The burn from a jellyfish can be compared to a trace from a nettle.

If for any reason for you did not manage to go to the warm sea, be not upset. You will be able perfectly to spend time on the bank of the small river or the lake. And your research expedition will be not less successful and fascinating.

Fresh waters are generously populated with various living beings. From Gastropoda of mollusks you can meet of big and small pond snails . It is easy to recognize them by a cone-shaped sink with the wide mouth. Perhaps, the zhivorodka, similar to an ordinary grape snail, or different types of coils with sinks in the form of flat spirals will get to you . From fresh-water two-shutters most often in a midland the swan mussel and a perlovitsa meet . Perlovitsa has narrower and extended sink.

Under the flooded snag or the abrupt coast you the meeting with crawfish can expect

.

On shoal, many different insects and their larvae live in thickets of water plants. Dragonflies, bugs are plavunets, water measures, bugs - vertyachka. If has the luck, you will see the well-known spider - a serebryanka.

Even the least researcher recognizes the heroine of fairy tales at once - a green goggle-eyed frog.

Well, you could sunbathe, have a rest from vanity and cares, and at the same time to acquaint the child with some most interesting creations. Means, your beach day was successful wonderfully well, and research expedition can be considered successful.