Strange creature

Nemertines have a very long body, although small shapes and leech-like shapes are also known. However, in most cases these are very thin and long shapes. Usually their body is round and in cross section they reach only 7-20 mm. 2 m in length. The body expands towards the head, resembling leeches. The body of nemertines is covered with epithelium, very rich in glands and bearing, like turbellaria, a cilia. A multi-layered musculature is developed under the epithelium. Like flatworms, nemertines do not have a body cavity and the space between the internal organs and the body walls is filled with parenchyma. The nervous system is in the form of a brain node ("brain") and two longitudinal nerve trunks.

The characteristic organ of the nemertine is the proboscis. It lies in a special container above the intestines. He sticks out either through a special hole or through his mouth. In this case, the trunk is screwed into the proboscis cavity, or a rhinocele. By contracting special muscles, the trunk extends outward like an inverted glove finger. Special retractor muscles (retractors) can return the trunk to its original position. The trunk is a formidable nemertine weapon. Nemertines are predators. Their proboscis is equipped with a special venomous gland. The proboscis looks like a white threadlike mucus or liquid shooting outwards, which is pulled outwards, releasing many branched antennae into the surface of the prey, which in turn release the same ones. The proboscis is a predatory weapon and contains stinging cells There is not a single needle on the entire surface of this organ; the substance flows freely, and also has a penetrating ability like a liquid (from the physics course, the well-known fact that liquids are incompressible) and a large compressive force. The neurotoxin in it is strong enough to hunt fish. Will use proboscis For penetration, including the navel and nipples(One individual can penetrate only one part of the body, so it makes sense to increase the number of creatures) The worm swims perfectly.