Jellyfish

the tentacles

A jellyfish will eat whatever prey it can subdue with the stinging cells of its tentacles, however, prey is often limited by size or the strength of the particular species of jellyfish's venom. Some jellyfish, such as the upsidedown jellyfish, do not eat prey, instead deriving all nutrition from zooxanthellae symbiotes.

Once prey has been subdued, the tentacles manipulate the prey through the mouth and into the stomach, where it is exposed to digestive enzymes and broken down into nutrients and absorbed.

Good question..Honestly I am not sure. I do know that when they are in a dark area they light up so they can see where they are going. Im not sure if that is the only way they light up. Remember not all Jellyfish glow. I hope I helped you..

Telepathic Morse code.

They are not mammals because they don't have fur, or hair. Therefore, they are amphibians.

Feeding habits for most jellyfish is floating around and eating what comes along. However, the box jellyfish is able to hunt for its food. Jellyfish are able to adapt to various depths of water, from shallow to deep.

The life cycle of the Physalia physalis is roughly one year, ending shortly after they sexually reproduce by releasing gametes into the water column after the adults gather into a swarm. Two drifting gametes fuse into a zygote, which eventually develops into an adult man of war, several months later.

How these jellies are able to gather into a swarm is unknown to science at the moment, since their movement is normally only governed by both prevailing and random currents and wind. The next generation of marine biologists may just provide the answer to that quandary, and it is these unknowns that make science the most interesting.

tentacles

They are seen in ocean's ..... I think....sorry but I'm pretty sure they are seen in oceans and if I'm wrong then you can just look on Google.

No. They have a very simple nervous system that includes neither of these features. Hence, they are not chordates.

I found an article that states box jellyfish rarely live past a year in the wild and in that time can grow to 10 feet and to a weight of 4.4 pounds. There are nineteen species of box jellyfish. Some are quite large such as Chironex fleckeri described above. One variety is very small, Carukia barnesi which less than an inch in girth, and weighing less than an ounce.

Get a big poster and put big words and neat art-craft on it

Plants, seeds, isects, Small fish, eggs, and invertibrates. They are carnivores.
it eats fishes and shrimp

Jellyfish don't have specialized digestive, osmoregulatory, central nervous, respiratory, or cuirculatory systems. They digest using thegastrodermal lining of the gastrovascular cavity, where nutrients are absorbed. They do not need a respiratory system since their skin is thin enough that the body is oxygenated by diffusion. They have limited control over movement, but can use their hydrostatic skeleton accomplish movement through contraction-pulsations of the bell-like body; some species actively swim most of the time, while others are passive much of the time. Jellyfish are composed of more than 90% water; most of their umbrella mass is a gelatinous material - the jelly - called mesoglea which is surrounded by two layers of epithelial cells which form the exumbrella (top surface) and subumbrella (bottom surface) of the bell, or body....

It is not a jellyfish, but a grouping of polyps that are all different and work together. Its sting to human is sometimes fatal, and if it is treated the same way as a jellyfish sting it is even more severe and likely to cause death. the average length of tentacles is 3 feet, some have been reported at 50 feet. It has a sail filled with air that can sometimes deflate to be submerged, as it has to stay wet. It has no way to move itself so it flows with the wind and tide.
Cnydaria.

The smallest jellyfish are the peculiar creeping jellyfish in the genera Staurocladia and Eleutheria, which have bell disks from 0.5 mm to a few mm diameter.

Jellyfish are bell shaped or umbrella shaped creatures that have adapted themselves very well for a life in water. Jelly like substance makes up most of its body. They are beautiful creatures found in water that have been a subject of fascination for a lot of people.

It is made up of more than 90% water which helps it float easily in water. To protect themselves from predators, they have stinging cells. These stinging cells also can keep the jellyfish warm. They sting not just for defense but also for catching a prey. There are about 200 different species of jellyfish which have taken on different adaptation to suit the environment they live in such as warm, cold, shallow or deep sea.

They are free swimming creatures and have large tentacles to help them put their food in their mouth. Some jellyfish filter feed themselves, whereas some others feed on live animals by first killing them with their sting. The sting usually immobilizes the prey which is then moved to the mouth with the tentacles and is then taken to the mouth and the food is then distributed to the rest of the body through canals that are radial.

For mobility, they use the muscles that line the margin of the bell to move up and down. These muscles contract and relax in order to move the jellyfish. The waves and currents help in their horizontal movement. While most of these jellyfish actively move around, some of them are found to passively float.

Some jellyfish have developed simple sense organs while some other have complex sense organs. One of the jellyfish found in northern seas can grow upto 6 feet across and have tentacles up to 100 ft. Another hydrozoan lives in colonies with tentacles the length of 60 feet and have developed a sac like gas filled structure which acts as a float.

The jellyfish have adapted themselves very well for life in marine as well as fresh water living. Though they don't have a complex digestive system like more evolved beings, they digest using their gastrodermal lining where nutrients are absorbed. They also don't require a respiratory system as the gas can diffuse through their extremely thin skin.

They do not even have a brain. They just have a loose network of nerves which form a nerve net which can detect stimuli like the touch of other organism. Jellyfish have light detecting organs which can help them decide which is the top of the ocean and which is the bottom using the light of the sun.

When the right temperature, ocean current, nutrients, and ambient oxygen is available, it result in a jellyfish bloom which will have a swarm of up to 100,000 jellyfish. Because of all this adaptations, they have successfully survived for thousands of years and are still found in plenty which could be because of the increase in nutrients in the water because of human influence.

They can't see. They are more or less like plants. They are blind so they operate by touch (i.e. if anything touches there tentacles, they release toxins).They have privative eyes. Unlike our eyes they can't see exact shapes. They can however detect differences in colors. They can then react to a given situation based upon those colors. Correction: They don't have eyes. They use stimuli in their tentacles to sense things.

Jellyfish can bioluminesce when they are stimulated.

The luminescent light produced is bluish in color, attributable to a molecule known as aequorin, but in a living jellyfish it is emitted via a coupled molecule known as GFP, or green fluorescent protein, which causes the emitted light to appear green.

A box jellyfish is considered to have radial symmetry. The box jellyfish belong to the animalia kingdom and the Cnidaria phylum.

it is radial because it is formed from the central point

Jellyfish often have tetramerous radial symmetry, which is symmetric across two axes. (Four symmetrical sections.)

No; jellyfish and mammals are animals evolved from different ancestors. While jellifish belong to Phylum Cnidaria and have a radial simmetry, mammals are vertebrate, have bilateral simmetry and belong to Phylum Chordata, having a notochord, a complete digestive system and a neural cord.

Your question is too broad to answer as there are many species of jellyfish. For instance on the island of Palau where the jellyfish in one lake actually do not eat (catch food) at all. Please ask you question again specifying which species of jellyfish you are wanting to know about.

they are different because jellyfish are usually pink and us humans are either white black chocolate or pink haha, they are also different because they have the stingers, the only thing that stings from our body is when we have to take a crapuley and it doesnt want to come out (also known as being consitipation haha) they also have like 5 arms and we only have 2 except for the male the 3rd arm is just hidden in his pants :) those are all the differences between jellyfish and humans.. also we get more pleasure when we do it with our boyfriend or girlfriend and all the jellyfish feels is our feeling of constipation <- when they lay eggs, well if they lay eggs i don't know for sure !

Jellyfish tend to live for about one year. If jellyfish don't live for about one year that is probably because another fish, turtle, or bird eats it. Another way they could die early is if they aren't in salt water. Jellyfish have to be in salt water to be able to live.

Moon jellyfish are found throughout most of the world's oceans, from the tropics to as far north as 70° latitude and as far south as 40°. Staying near the surface, they prefer to live in protected waters, such as inlets, bays and harbors, but can also be found in open ocean waters in temperatures ranging from 42° F to 88° F, as well as in waters with a salinity as low as 1/5 of normal ocean water.

They eat organisms such as mollusks, crustaceans, tunicate larvae, rotifers, young polychaetes, protozoans, diatoms, eggs, fish eggs, and other small organisms. Occasionally, they will also eat hydrozoa and ctenophora jellies.

Moon jellies also like long moonlight swims along the beach, AC/DC music, and their favorite drink is sea foam. [Or not.]