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Jellyfish
Found in every ocean, jellyfish are not technically "fish." Jellies have an umbrella like structure that allows them to float beautifully in the water. Watch out though, some of them sting!
1,930 Questions
Its very painful, yet it all depends on what species of Anemone you've touched. The best way to describe the sting would be very sharp. Its kind of feels like a couple of pin coushions being pierced all at once.
How can you protect yourself from a jellyfish?
Keep out of the ocean, or be extremely careful. The sting is painful, and some species can be deadly.
^^^This wasn't helpful...i would like to still be able to go in the ocean without being stung if possible...any suggestions?
The word cnidarian mean stinging cells why is this a good name for this group?
This is a good name for this group because i consists of jellyfish that use their stinger for defense.
How much food can a jellyfish fit in their stomach?
Jellyfish have a mouth that they place food into. Their bodies aren't very complex but they do have a stomach and intestines. They are carnivores which means that they eat other living creatures. They tend to rely on the current of the water and the wind to help them find food. They trap food in their tentacles and then move it to their mouth. The tentacles are sticky so there is no problem with catching food.
Other Jellyfish that are larger though have the ability to swim vertically rather than just relying on the current and the wind. They consume crustaceans, small fish, and even other smaller species of Jellyfish. They are opportunistic and they will take the time to eat anything that may be available. It is amazing how much plankton they can consume when it is readily available.
They can consume prey that is almost as large as they are too. They don't mind taking on the larger ones. Their tentacles have powerful toxins that immobilize the prey long enough for them to consume it. They have the ability to detect the slightest movement around them.
By nature the Jellyfish has the response of stinging everything that they come into contact with. This is how they get their prey and are able to take every opportunity to consume food. Unfortunately they can't tell the difference between humans and their prey. When a human gets sting it is due to the natural processing of the Jellyfish. They don't have eyes (except the box jellyfish) or a brain. Everything is sensor oriented for them in terms of finding their food.
However, the Jellyfish is highly adaptable and that is why they have been able to survive in so many variables around the oceans. For example when food supplies are scarce they are less likely to take part in creating offspring. This helps to limit the competition they will have for food later on. It helps to keep the balance of things in the ocean in perspective for the Jellyfish species.
They will also do all they can to conserve energy when food supplies are hard to find. This includes not swimming vertically to use up any energy. Instead, they will allow themselves to float along with the wind and the current of the water. They don't expel any energy that would cause it to be harder for them to survive on so little food for that period of time.
Another survival technique they use is adapting to different temperatures of the ocean and different depths. If food is hard to find they may go deeper into the water or closer to the shore. When large numbers of Jellyfish are found close to the shore it is a prime indicator that they aren't getting enough food to eat in their natural locations in that body of water.
The stomach of the Jellyfish is a large cavity. Once the prey is in the tentacles it will be taken to the mouth. It will be swallowed whole and then deposited into the stomach. They don't have teeth or a way to chew up their food. The stomach has special lining that helps to reduce the prey in the stomach into nutrients that the body can use for survival.
The fact that 95% of the body of a Jellyfish is water is really fascinating to experts. They are in awe of the overall feeding abilities of them in spite of only 5% of the body being solid materials. This is why the overall feeding habits of the Jellyfish continues to be something they are interested in. They also strive to identify the varied eating habits of different species of Jellyfish.
What is the worlds most deadlist jellyfish?
The smallest deadliest jellyfish is the Malo Kingi Jellyfish which is a type of Irukandji Jellyfish. It inhabits the waters of Northern Australia and is no larger than an adults fingernail making them impossible to see in the water. There are two types of Irukandji Jellyfish the Malo Kingi and the Carukia Barnesi. If these jellies don't kill you they will at least leave you with a nasty case of Irukandji syndrome which results in such symptoms as headaches, nausea, restlessness, sweating, vomiting, high heart rate and blood pressure, not to mention severe back pains, muscle cramps, kidney pains and an intense skin burning sensation.
How are cnidarians more advanced then jellyfish?
Sponges are less complex because they are just made of individual cells. There is no level of organization past cells in sponges. Cnidarians, on the other hand, have tissues, a higher level of organization. Tissues allow for some forms, like box jelly fish, to have eyes (this is just one of many advantages of tissues). Cnidarians' level of organization stops there though, they have no organs (heart, brain, etc.).
How do jellyfish respond to stimuli?
When a Stingray reacts to stimulus it discharges stinging cells. The stinging cells penetrate the skin and inject a poisonous venom.
How do jellyfish support their bodies?
Jellyfish have what is called a hydrostatic skeletal system. This means that it is not actually hard. It is more similar to a balloon filled with water. It allows the jellyfish to move in the water as well as allowing its body shape to change with the movement of the ocean and with the jellyfish's own movement without causing injury to the animal. This kind of flexibility is required for such a delicate animal to survive. It's really an amazing system. When the jellyfish contracts the muscles surrounding the pouch (its hydrostatic skeleton) it causes movement.
Jellyfish are not the only animals with this kind of skeleton. For example, earthworms also have a hydrostatic skeleton. That is why they can be long and skinny one moment, and short and fat the next.
Are Portuguese man of wars more dangerous than sharks?
Yes, they are even more dangerous than bull sharks and great white sharks. Portuguese man of wars can produce powerful stings that can cause shock, fever, or heart and lung problems. On land if you see one, do not touch them because they can still sting you badly. In water, stay away from them. They can sometimes be found in groups of 1000 or more. The toxics from the portuguese man of war are about 75% as powerful as cobra venom.
What jellyfish are not poisonous?
freshwater jellyfish
moon jellyfish
cannonball jellyfish p.s. they don't sting humans but they do spit mucus
blue blubber jellyfish P.S. they r not harmful unless u r very sensitive
moon light jellyfish
Actually chief...an exoskeleton is any form of skeleton on the outside of the organism. this can be chitinous (sort of like that hard shell on crayfish or "bugs" i.e. arthropods), hydrostatic (which is closest to what you are describing i.e. slugs, worms, etc.) and several others. A n exoskeleton can also be combined with an endoskeleton in organisms like fish(scales) and turtles(shells). There are several other types also which i do not know enough about to comment.
So yes, jellyfish have hydrostatic exoskeltons
How do you get rid of a nettle sting?
Mulching, pre-emergent and post-emergent broadleaf weed killers, removal of rhizomes and rootstock, and solarization are ways to get rid of nettles. The perennial weeds in question belong to the Solanaceae and Urticaceae families. They spread by rhizomes underground and by seeds above-ground in compacted soils as well as in grounds benefiting from full sun, good drainage, and sufficient nutrients.
Are there box jellyfish or other dangerous jellyfish in the sea around the Seychelles?
"Box jellyfish" or "sea wasp" is also a common name for the notoriously dangerous Chironex fleckeri. Box jellyfish are among the most venomous creatures in the world. Each tentacle has about 500,000 cnidocytes, harpoon-shaped needles that inject venom into the victim. Stings from these species are extremely painful and often fatal to humans and prey animals. Their venom can kill a human in a minute.
How do you get rid of jellyfish?
You can not get rid of jellyfish, they have been in the ocean forever. They are here to stay.
Can jellyfish harm you if they've washed ashore?
yes, jelly fish can sting badly if you touch them, contact a coast guard if there is one near by, if not just leave it because jellyfish can breathe on land and in water
