Jellyfish — the most mysterious marine life

A long time ago, even before dinosaurs roamed the Earth and were the first sharks that these extraterrestrial beings already inhabited the seas and oceans. They are the most ancient inhabitants of our planet . lived on Earth for another 500 to 700 million years ago.

This jellyfish is one of the most amazing, beautiful and mysterious sea creatures.

Jellyfish seem to be supernatural creatures, alien beings largely thanks to its strange forms and colors. The nature has created them according to his own, some incredible drawings: the body resembles an umbrella, or bell, sometimes the ball.

His name jellyfish has been because of the similarity with a wiggling hair-the legendary snakes of the Gorgon Medusa from Greek mythology. (Photo Animal Theory):

There are about 2000 different species of jellyfish. Some live in fresh water, others are found in seas and oceans. (Photo By The Tahoe Guy):

As already mentioned, jellyfish have lived on Earth for another 500 to 700 million years ago. This is a very long time. For example, the first dinosaurs appeared about 225 million years ago and the most ancient representatives of the sharks existed about 420-450 million years ago. (Photo Animal Theory):

The structure of a jellyfish is also incredibly: primerena they consist of 95% water, 3-4% — of salt and 1-2% — from protein. They have no heart, no eyes, no circulatory system or gills.

The Cassiopeia jellyfish, living mainly in the Mediterranean sea. (Photo Pietro Columba)

Most of the jellyfish consists of three parts: 1) gelatinous body; 2) tentacles that sting and catch prey; 3) the mouth, which absorbs food. (Photo By Henry Kaiser, National Science Foundation):

However, jellyfish retain their shape in the water. Remove the jellyfish from the water, and see for yourself how it is that hour tends to turn into flat trembling drop. (Photo Garry):

Ancient alien creatures feed on plankton, fish eggs, small crustaceans. Famous tentacles of jellyfish, which has a filamentary structure, lure prey, pounding her in the mouth. (Photo from Janne Hellsten Helsinki, Finland):

Despite the vague sense organs, jellyfish can smell, sense of smell, to distinguish light from darkness. (Photo By Ricardo Carreon):

Recently discovered jellyfish Tiburonia granrojo. The diameter of the dome is 1 meter. (Photo by NOAA | Monterey Bay Aquarium Research Institute):

With the help of special compartments on the sides of her “bells”, the Medusa manages to keep its balance in water. Sail jellyfish help the undercurrents. Against the current jellyfish floats independently, moving reactive manner, pushing the water from the cavity of his “bells”. (Photo By Luc Viatour):

A jellyfish breathes with the whole body, since she has no lungs and gills, as well as any other organ of respiration. The walls of her gelatinous body is very thin, so the oxygen molecules to freely penetrate through the gelatinous “skin” directly into the internal organs. It turns out that jellyfish breathes with its entire surface of his body. (Photo By Jim Patterson):

Poisonous jellyfish Pelagia nochesvetka. (Photo By Hans Hillewaert):

Jellyfish have a wide variety of sizes. The diameter of the “dome” can range from 3 millimeters, the size of a thimble up to 2.5 meters. The most common jellyfish are the size of saucers. (Photo By Roland Bircher):

The largest jellyfish is the so — called “lion’s mane”, which lives in the Arctic sea. Her body reaches 2.5 metres and tentacles 37 metres in length. It’s almost half a football field!

Lion’s mane:

Live jellyfish at different depths. some swim near the surface, others are immersed to a depth of 10 thousand meters.

Some jellyfish “sting”. The edges of the “bell” of the jellyfish tentacles are stinging (nettle) cells, which can cause burns and paralyze prey. Stinging jellyfish quietly and watch for unwary animals that become victims of their poison. Even if smash is a jelly-like creature in the water into thousands of pieces, it will not save the jellyfish just will turn into a thousand tiny monsters that can sting.

“Stinging” jellyfish can harm people, but is vital to smaller marine animals — small fish and crabs that cling invisibly to them at the bottom and thus safely travel on its “host” as on the liner.

Long-eared or long-eared Aurelia jellyfish from the squad diskimages. (Photo By Dr. Justin Marshall, University of Queensland | NOAA):

The most dangerous is the box jellyfish sea wasp (Chironex fleckeri), inhabiting near the North coast of Australia and in the waters of Southeast Asia. Annually from its poison killed up to 65 people. The lethal outcome occurs within three minutes. This is one of the most poisonous and deadly creatures on earth.

Sea wasp

Jellyfish are one of the most mysterious and incredibly beautiful inhabitants of the seas and oceans. Meeting with them might be fatal, but despite the bad reputation, most jellyfish are completely harmless. (Photo By Intandem):

(Photo by Anna Fiolek | Expedition to the Deep Slope 2007, NOAA-OE):

Purpurosea jellyfish Chrysaora Colorata. (Photo By Sanjay Acharya):

Actually, jellyfish are just some of the most beautiful sea creatures. And the most unusual, like creatures from another planet. (Photo By Andrew MacLeod):

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