It says on the wikipedia about the lion's mane jellyfish that it is eaten by other jellyfish species but does not name them. Does it mean they are cannibals eating their very own species? And can an adult arctic lions mane jellyfish be eaten by any other jellyfish or just juvenilles?
200129
The Lion's Mane Jellyfish is eaten by other Lion's Mane Jellyfish as well as a variety of other jellyfish. While someone may consider this as "cannibalism" in our own species, in the animal kindgom when someone lives in an individualistic species, cannibalism happens a lot. Animals compete and sometimes that involves attacking eachother. \n\nHowever, the jellyfish are generally attacked by other species of jellyfish. \n\nIn addition, the Mola mola (a fish off the Washington coast) will eat them.\n\nAs for your second question. It would definitely be possible.\n\nThe problem with jellyfish is that they're mostly water so it's hard to sting them.
329432
Jellyfish don’t have brains, and they aren't the only creatures that lack them. Sponges and a few other odd groups of animals also lack anything like a brain.\n\nJellyfish don't have brains because they don’t have any front or back. They represent a very early evolutionary experiment. At that stage animals had no front or back, instead the developed along the lines of a ball or disc. That body plan is very simple to construct, but balls and discs don't have any front or back.\n\nOther animals evolved brains because they have one part of the body that ALWAYS contacted food first as the animal moved around. That was the front end. And because there was one end that always came into contact with food first that end evolved the highest concentration of sense organs, and the highest concentration of nerves. That high concentration of nerves in turn evolved into a brain. Because they have no front or back jellyfish also never had the potential to develop a brain in the front end. \n\nI guess the question you need to ask is, if a jellyfish did have a brain where would it be? Since any part of a jellyfish has equal chance of can coming into contact with food there is no obvious place for a brain to evolve. Instead jellyfish have nerves scattered more or less evenly across the body, so all body parts are equally able to respond to stimuli.\n\nSo no, animals don't need brain to function. A brain is just a concentration of nerves. It is only useful if you can concentrate those nerves where most of the sensory input is going to arrive. For humans our eyes, ears, nose and tongue are all located in the head, providing a massive amount of sensory input, so it makes sense to have the processing nerves for those organs in the head too. The sense organs of jellyfish are scattered all across the body so it makes sense to have the nerves scattered too, and that is exactly what we see.\n\nNot having a brain hasn't prevented jellyfish and their relatives from being successful, and they have filled a great many ecological niches and evolved every major sense including hearing, smell, balance and even eyes.
64128
Yes, what you saw were pelagic siphonophores. These are colonial animals. The Portuguese Man o War is the most widely known siphonophore.\nAmong the more important predators of midwater habitats in Monterey Bay and elsewhere are the members of the Subclass Siphonophorae.   Whether siphonophores are single individuals or colonies of well-integrated polymorphic hydroid and medusoid individuals is a matter of debate among specialists.  Some species are truly impressive organisms, forming delicate chains in excess of 100 feet long.  Many others are far more diminutive and inconspicuous.  All siphonophores are predators and typically spread a veil of nematocyst-laden tentacles for capturing unsuspecting prey.  Some of the "individuals" along the length of the stem provide tentacles for defense (dactylozooids) and food capture.  Depending on the type of siphonophore, others may function as swimming bells (nectophores), aid flotation (pneumatophore), provide additional defense (bracts), digest prey (gastrozooids), or serve for reproductive functions (gonozooids).  The central stem to which all these units are attached is hollow.  The gastrovascular cavity passes throughout the stem, and extends into the float (if present), swimming bells, tentacles, bracts, gastrozooids and gonozooids.  \n\n    A bewildering array of about 150 species inhabit the oceans.  Many present difficulties in identification, even for experts. \n\nHope that helps
539125
wow...  it might be easier to list the animals that don't. When you add in fresh-water crustaceans, you get even more mamals and such. In fact, between zooplankton and shrimp alone, probably 90% of the aquatic population eat crustaceans, from simple hydra all the way up to baleen whales.
310514
Hey.. go to this article in Wikipedia, it should help you out in answering your jellyfish questions.. http://en.wikipedia.org/wiki/Jellyfish
198147
A group of animals is living in an area - foodsource = nuts. The ones with good crushing teeth will eat lots, reproduce and pass on the crushing design gene. Any with ripping design etc would be unsuccessful in gaining food and thus wouldn't reproduce and pass on the ripping gene. Eventually all members of the species have crushing teeth. Survival of the fittest etc. A lion with blunt teeth would not live long enough to pass on the genes
477899
As already stated, a shark would not be able to turn in it's own body length to attack itself.  I know this sounds gruesome, but I have seen a video of a disembowelled shark eating its own entrails time and time again until it died.  The shark was in a feeding frenzy.  So My answer would be if it could, it would!.
264955
er, here we go (and this is straight off the top of my head)\n\nNo skeleton (endo or exo)means that they cannot self support. (neg)\nNo real means of self propulsion (neg)\nMostly translucent (pos) (from a prey point of view)\nSome have stingers (pos) for food capture and defense\n\nand thats all i've got. It's been too many years since school. sorry
382108
http://www.lewa.org/lewa-wildlife-conservancy-pics/cheetah_eating_zebra.jpg\n\nhttp://www.dongettyphoto.com/kenya/images04/CheetahOnZebra.jpg\n\npics of cheetah eating a zebra
419517
eyelids... :-)\n\nSome species of moth do not have a digestive system; therefore, the adult moth does not eat. An example is the cecropia moth -- and fittingly, it only lives for a few days -- hopefully to mate.
510756
G'day Chloerochelle,\n\nThank you for your question.\n\nHyenas have their own family. They are'n't either dogs or cats. They are most closely related to Herpestidae which conains mongooses and meerkats.\n\nI have attached sources for your reference.\n\nRegards
32258
Maybe this is it?\n\n\nby Rania Shurafa" \nCountry of Origin: The Middle East\n\n\nOnce there was a lion, the king of the jungle and he was hungry. He decided he wanted to eat the cow. But he couldn't just ask the cow, so he played a little trick. He let every animal offer himsel for herself, so that the king of the jungle could have a good meal. \n\nSo the tiger went first. He asked, "King, King, I offer myself to you." The lion said, "No, no. I can't possibly eat you. Your meat is too hard." After the tiger asked, the giraffe asked," King, King, I offer myself to you." The lion refused the giraffe. He said you're too tall and bony. After the giraffe was the hippo, but the lion refused. And after the elephant came the snake, the deer, and the horse. They all asked, but the king still refused. Since every animal asked except the cow, the cow got embarassed and asked. After the cow asked, the king surprisingly agreed, and he ate the cow. So the lion got his great meal.
585825
We did at one time have lions in these parts.  They went extinct as part of the megafaunal extinctions that took place about 10,000 years ago at the end of the last ice age (perhaps not so coincidentally, also about the same time sizable human populations arrived in North America).\n\nThere are a few problems with re-introducing lions into the modern ecosystem.\n\nBeyond the potential danger to humans living in the area, or the danger to livestock, it wouldn't be a good idea simply because that ecosystem really no longer exists.\n\nThe prairie as a true ecosystem is almost completely gone today.  There are no gigantic herds of bison that can migrate from Canada throughout the western United States anymore.  More than 99% of the prairies have been ripped up and turned into crops to feed the swollen ranks of humanity on the planet.\n\nThe temperate grasslands are the most endangered ecosystem on the planet (far more so than tropical rainforest).  There is virtually no untouched prairie left anywhere on the globe.  \n\nThere's simply no place to actually introduce the lions even if we wanted to.\n\nUPDATE:  Upon actually reading the article you linked to, I see that this is exactly the problem the proposed project is intended to ameliorate.  I whole-heartedly agree, and think it's a fantastic idea!  Thank you for posting this!
366273
Your friend is correct. The starfish in question is a large spiny species called the Crown of Thorns (Acanthaster planci).  It can reach 3 feet in diameter.  Most snails don't eat starfish, but one does, namely the Pacific Triton (Charonia tritonis).  It would be bad enough if these large snails actually were overcollected for food.  But that is not the case.  They have been overcollected primarily for their large and beautiful shells, which are sold in gift shops and tourist shops all over the world, as decorative items.  The species is now protected in many areas, including the Great Barrier Reef, and is now making a successful comeback. \n\nHere’s a pic of the Crown of Thorns:\n\nhttp://ryanphotographic.com/images/JPEGS/Acanthaster%20planci%20Crown-of-thorns.jpg\n\nHere’s the living snail attacking a Crown of Thorns:\n\nhttp://members.cox.net/arniesdca/shells/charoniaOnCrownofTh.jpg\n\nAnd here’s a picture of the triton shell:\n\nhttp://www.conchking.com/Pacific%20Trtons.jpg\n\n.
536513
Basking sharks and whale sharks are fish that eat plankton that a killer whale may try to eat. Killer whales eat gray whales, minke whales, blue whales, and sperm whales but they are all mammals and not fish.
84721
Rather than type in a long list of names like Calimecita, I will just add one.\n\nQ:  Quadralaria pyramidalis  it is a type of Cnidarian seajelly.\n\nFor fun, I may come back and do A to Z with just species of jellyfish.\n\nEDIT\nOK, here is my seajelly only list. Sadly I am missing 3 letters. J, X, Y.  I know there has to be an X somewhere but my brain is failing me this afternoon.\n\nAurelia aurita\nBerenix thalassina\nCyanea capitulatta\nDipurena brownie\nEleutheroa charcoti\nFavonia bacheri\nGossea faurea\nHippocrene brittanica\nIrenopsis hexanemelis\nJ\nKanaka pelagica\nLeptobrachia leptopus\nMastigias orsini\nNemopsis bachei\nObelia corona\nPelagia colorata\nQuadralaria pyramidalis \nRhizostoma cruciata\nSarsia eximia\nTima cari\nUmbrosa lobata\nVersura maasi\nWandelia charcotti\nX\nY\nZygocanna costada
662596
Nope what about about the lions tigers & bears & even fish kills other animals for food! Think about that.