Medusa - a compulsory resident marine waters.Over millions of years, these creatures have changed little.The most famous and dangerous - Rhizostoma jellyfish, which can be found in the waters of the Black Sea.Thousands of visitors each year get burns, having met with these "cute" creatures.
Medusa Rhizostoma causing trouble to anyone who dares to touch it.This is one of the most dangerous representatives of some kind.It can be easily distinguished from congeners by a large spherical "hat", which is 150 cm in diameter and grow up a lot - so-called tail.Medusa Rhizostoma, photos that you see in the paper feeds on plankton through secondary mouth opening.
But there is evidence that the power of jellyfish and swallow small fish, crustaceans, worms and other defenseless inhabitants of the ocean.This happens when the sea manages to capture beauty Tapered extraction processes.Stinging thread hit the victim, immobilize it, and then with a jet of water, it goes into your mouth.The poison is in Tapered outgrowth affects the victim, paralyzing it.
Over millions of years, some species developed a instinct that allows them to fly in the vicinity of a huge jellyfish, thereby protecting the neighborhood from marine predators.But the main task - to survive and not get caught in the tail of his "patron saint."
name "Rhizostoma" is justified.The fact that this is not a jellyfish tentacles.Her oral aperture forms dense folds which extend downward and resemble the tail.In fact it is - the hole in the form of oral tubes and real mouth grows with time.External mouth opening resemble the thick roots of the plant, and hence there was this eloquent name.
Rhizostoma quite common in the Black Sea.This jellyfish can be found both at depth and near the coast.Because of the proximity to the beach and leisure burns victims are unsuspecting children and adults.Jellyfish in the water Rhizostoma looks very exotic.She moves slowly, absolutely not hidden and does not try to escape.In this regard many a desire to catch or touch it.This unconcern leads to quite tangible consequences - burn your skin.
jellyfish venom is not lethal to the human body, but it causes a severe allergic reaction.Thus pain amplified in salt water.Pain is about the same as when you get burned by a nettle.
During the storm, all the jellyfish from the coast carries the bottom.Swimming after a save by meeting with these sea creatures, though not for long.Interestingly, scientists have noticed, as well as simple fishermen: jellyfish Rhizostoma disappears from view for a few hours before the storm.Feeling the vibrations of the ocean, jellyfish put their umbrellas and go to the bottom.With them disappear small fish and crustaceans, shrimp that swim under their dome.Science is still unknown how these creatures are anticipating a storm.But their disappearance - accurate sign that the storm is coming.Conversely, in calm weather, serene population "hot" beauties in coastal waters has been steadily increasing.Avoid trouble by meeting with them is possible if to bathe with caution.
