Jellyfish

Yes they have stingers like jelly fish. Few portuguese man-of-war (blue- bottles) stings in Hawaii cause life-threatening reactions, but this is always a possibility. Some people are extremely sensitive to the venom; a few have allergic reactions. Consider even the slightest breathing difficulty, or altered level of consciousness, a medical emergency. If tentacals are stuck in skin do not apply vinagar. This may cause a worse reaction. Rinse with water until gone. For more informatio visit:http://www.aloha.com/~lifeguards/portugue.html

Ulmaridae family, and it is the only member of its genus yet identified.

Jellyfish tentacles have a variety of jobs. Their main purpose is to capture food. Usually they trail behind the jelly to fish for prey. Once contacted, tentacles have specialized cells that sting, stick to, or entangle the prey to immobilize it. The tentacle then contracts and draws the prey towards the mouth of the jellyfish, where oral arms push the food into the oral cavity for consumption.

Tentacles sometimes are also used to aid locomotion, grasp onto substrates, and ward off enemies.

The eyes are suspended on stalks with heavy crystals on one end, acting like a gyroscope to orient the eyes skyward.

Antarctica is a continent: Jellyfish are marine animals. The Southern Ocean is home to Diplulmaris antarctica,a species of jellyfish in the family Ulmaridae. The ocean surrounds the continent.

The "other 5%" of matter in a jellyfish would be its living tissue, i.e., proteins, nucleic acid, etc.

Yes, fish do get cancer and scientists actually study cancer in fish to investigate possible treatments that may also work for humans. "Cefas scientists are collaborating with experts from the Cancer Research UK (CRUK) Institute for Cancer Studies at the University of Birmingham because of the apparent similarity between the liver cancers present in the fish collected under the CSEMP and those appearing in humans."

Source: http://www.ocean.com/article.asp?locationid=1&resourceid=5987&ProdId=&CatId=5&TabID=&SubTabID=

No.

because they are maid out of water so they evaporate

possibly, but i know Moon jellyfish and Up side down jellyfish are legal to have

Jellyfish are neither friendly or aggressive. They have no way to tell a friend from a predator, so they do not sting you on purpose unless they are box jellyfish, which feel threatened by human populations.

There is no way to correctly answer this question. The ocean is too big, too deep and most of it has not been explored. There are a lot of jellyfish (the arctic jellyfish has tentacles about 90 feet long) around, but, no one knows how many there are.

Neither sponges, jellyfish, nor sea stars are fish. In fact, they are quite different creatures from each other.

Cnidereans have pressure-sensitive poison glands called nematocysts that are usually on their tentacles. When their [prey] touches these nematocysts, small "fangs" inject poison into the [prey]. The poison in the nematocysts can paralyze or even kill small animals. Once the prey is subdued, the tentacles pull the prey towards the mouth.

Jellyfish do not give birth in the normal sense. The process of releasing jellyfish ephyra into the marine column is called strobilation.

Early in the life cycle of a jellyfish, it takes the form of a tiny stalk attached to the seafloor, and at that point it is called a polyp. The unattached end of this stalk forms a disk shaped bud, that is eventually shed by a process of fission. This process continues until dozens more of these little disks (ephyras) are released.

This type of reproduction is obviously asexual, since each ephyra is a clone of the others, yet a jellyfish is also sexually reproduced, when, near the end of the adult medusa stage of life, a jellyfish releases gametes into the water column to randomly join another gamete from another individual jellyfish.

Yes. All insects, like all arthropods, have bilateral symmetry. Other arthropods include arachnids, crustaceans, centipedes and millipedes.

Bilateral symmetry means something has symmetry across one plane (known as the sagittal plane, and directly down the centre of their body), which means one side of their body approximately mirrors the other side.

Even though there are many different species there is no gestation period for any jellyfish species. These animals develop externally.

No, the turritopsis nutricula jellyfish is not extinct. Since, scientists are studying on them. Also, these type of jellyfish's population is increasing. Since, they could turn back into their polyp state again.

Organisms such as jellyfish and others are considered plankton when they are very small and swim at low Reynolds numbers, and considered nekton as they grow large enough to swim at high Reynolds numbers.

their stinging tentacles are used to catch adult jellyfish and stuff it down their mouths.

Most jellyfish are harmless but may sting alittle. there are a few jellyfish that actually can kill you in a matter of minutes. one of them is the box jellyfish, that can kill an adult human in 4-5 minutes.

The purple striped jelly fish is a carnivore so it eats living or dead things like plants, seeds, small insects, small fish, eggs, and other animals. They drift through the ocean and collect their food with their tentacles.