No, they more or less drift in the ocean currents
True, due to the ammonia levels in the urine, the sensors in the jellyfish's tentacles are disrupted and in that case stops them from stinging anything.
False. The myth that jellyfish pee on you when you get stung is not true. Jellyfish sting with their tentacles, which release venom, not urine.
Jellyfish.
A jellyfish is made up of 95% of water. They can have long tentacles that can be as long as a telephone pole. A jellyfish has no brain,heart, blood,or bones.Jellyfish are not a fish, fish are vertabrates,and jellyfish are in vertabrates.I hope you enjoyed these facts!they are 95% water!!!!!!!i know that's hard to beleave but its true!!!!
Yes, the box jellyfish IS a true jellyfish.
Animals with tentacles include squid, octopuses, and jellyfish. Cuttlefish and Portuguese Man of War also have tentacles. Many people think starfish have tentacles, but these are actually true arms and legs.
Ctenophora - Comb Jellies There are over 100 species of comb jelly, and most are transparent planktonic predators. They swim feebly by beating rows of plates made from fused hair-like cilia (the 'combs') and catch their prey with dangling tentacles. •The tentacles usually have 'colloblasts' on them which help the tentacles stick to the animals they touch. (Colloblasts are single cells that give off a gluey substance when touched.) •One type of comb jelly feeds on true jellyfish and is able to use the stinging cells (cnidocytes) on its tentacles, in much the same way as some of the sea slugs.
The four major classes of medusozoan Cnidaria are:Scyphozoa are often called true jellyfish. They have tetra-radial symmetry. They have tentacles around the outer margin of the bowl-shaped bell, and oral arms around the mouth.Cubozoa (box jellyfish) have a box-shaped bell, and their velarium assists them to swim more quickly. Box jellyfish may be related more closely to "true jellyfish" than either are to hydrozoa.[35]Hydrozoa may form medusa which resemble scyphozoans (but generally with a velum) and are distinguished by an absence of cells in the mesoglea. However, many hydrozoa species do not form medusa at all (such as hydra, which is hence not considered a jellyfish).Staurozoa (stalked jellyfish) do not have a polyp stage, however the medusa is generally sessile, oriented upside down and with a stalk from the "bell" planted to the substrate. Until recently, staurozoa was classified within scyphozoa.
Jelly fish are not true fish, so are members of a different animal class than are true, bony fishes. Jelly fish bodies are supported (or not) by hydrostatic pressure as opposed to bony skeleton.
true
Scyphozoa are often called true jellyfish.
they will eat by waving their tenticles and catch zooplankton< if it is a small fish, it will wrap it up in its tenticles and sting it. It eats through it mouth then it poops it back out through its mouth. TRUE FACT