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Understanding Jellyfish

An informative powerpoint on jellyfish!

Maryanna Chan

on 13 May 2010

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Transcript of Understanding Jellyfish

crown jellyfish Portugese man of war Akachochin jellyfish
6 ft man and box jellyfish comparison http://animals.nationalgeographic.com/animals/invertebrates/box-jellyfish.html Box jellyfish are also called sea wasps. Box jellyfish have 24 eyes? Jellyfish have no bones, brains, hearts, blood and no eyes like humans. They do however have sense organs. Alexander McQueen Balenciaga Marchesa Timothy Horn Now some species of jellyfish are growing to alarming sizes. Why? Because of the polution and rise in temperature in the Earth's oceans. It's a perfect breeding ground for jellyfish. The jellyfish that live near the surface of the water are usually clear and hard to see so that it makes it more difficult for predators to see them.
But the ones that live deeper in the water tend to be more colourful. The length of tentacles vary depending on the kind of jellyfish. http://www.jcu.edu.au/interest/stingers/biology%201species.htm Most species of jellyfish have another variation of the jellyfish within the species.
Basically there are species within species.
One example is the box jellyfish. Man-of-Wars are not jellyfish they are actually little jellyfish grouped together. They are colonies of specialized polyps thatdon't have the same life cycle as other jellies. The colony has special polyps for stinging, feeding, catching, reproducing, and inflating the bladder with carbon monoxide gas. Where Jellyfish Live Species of Jellyfish What jellyfish look like Jellyfish Lamp Jellyfish buttons Spacify jellyfish lamp Man-of-Wars can get to be over 100 feet long. Or longer!
They are very poisonous. Which help the jellyfish tell up from down. These sense organs or eyespots are part of a nerve cell network. The short tube that hangs from the centre of the jellyfish is the mouth and digestive tube. Some jellyfish have oral arms or frilly tentacles around the mouth. Jellyfish are drifters. That means that they go where the water current takes them. They may drift but jellyfish can also move one their own to hunt or if there is no current. They propell themselves by opening their bells then closing them quickly. They usually travel in big groups (called smacks) or in ones and twos. Jellyfish don't actually travel together on purpose. They just drift together. They eat fish, small water animals, and other jellyfish basically anything floating nearby. That's why people usually get stung. They are swimming too close to them or you are just near them and then they think that you're food. They spread out their tentacles and drift around wating for a fish to come and swim by. Then when something brushes pass the jellyfish the tiny stinging cells immediatly come out and stab into the prey paralyzing or killing the prey instantly. Then the tentacles bring the victim to the mouth and the jellyfish eats it. Sometimes you can see a jellyfish's latest meal inside their bodies since they are clear. Some jellyfish even have little fish living around or even inside of them for protection! The fish inside eat what the jellyfish catches. Jellyfish stings Jellyfish stings can make your skin burn, itch, give you welts, effect your breathing and kill you. Box jellyfish can kill their prey within minutes of being stung. Jellyfish are related to sea anemones, coral and man-of-wars. The umbrella looking part is the jellyfish's body. It's called a bell. Various species of sea turtles, snails, starfish, birds, and crabs can eat jellyfish. They have strong stomachs and mouths so their tentacles don't hurt them. Lion's mane jellyfish can weigh up to half a tonne? http://cronodon.com/BioTech/Jellyfish.html Jellyfish can still sting you even if they are dead. When the jellyfish are only polyps they make another copy and multiply. Getting to know Jellyfish Many designers have been inspired by jellyfish mediterranean jellyfish Huge nomura jellyfish are taking over Japan.
These fishermen are trying to herd and kill them.
Except when they stab at them with harpoons and sticks they just tear them apart and release more eggs into the ocean. jellyfish are 95% water? moon jellyfish flower hat jellyfish Like most jellyfish the box jelly varies in size. Or in this case Bikini Bottom These jellyfish are named after the chinese or japanese lanterns called akachochin lanterns. A smack of moon jellyfish A poor jellyfish that has been washed up on the beach. A portugese man-ofwar Nomura jellies being herded into nets. Here are some species of jellyfish: How do jellyfish eat? Fish in a jellyfish's tentacles Akachochin jellyfish Akachochin lanterns See the similarities? http://seagrant.gso.uri.edu/factsheets/jellyfish.html Here are some close up shots of jellyfish: white spotted jellyfish mediterranean jellyfish Nutandbee Plastic jellyfish Reproduction A typical jellyfish's life cycle Did you know that... Lion's mane jellyfish Some other nice pictures of jellyfish: Compass jellfish White spotted jellyfish Medusa jellyfish http://seafriends.org.nz/indepth/jellyfish.htm Reference List By Maryanna Chan Mr.Ganes class Jellyfish vary in size. Some may be as small as a pearl or as long as a bus! You should try not to go near jellyfish even if some species are not poisonous. Dory and Marvin in Finding Nemo Herriges Ann. Jellyfish. Minneapolis:Bellwater Media, 2007 Landau Elaine. Jellyfish. New York: Children's Press, 1999 Talyor Leighton. Jellyfish. Minneapolis, Minnesota: Lerner Publications Company, 1998 Parker Steve. Sponges, Jellyfish & Other Simple Animals. Minneapolis, Minnesota: Compass Point Books, 2006 Jellyfish have been found in every ocean in the world.
Some jellyfish even live in freshwater lakes and ponds.
Jellyfish have been around for more than 650 million years. And have been around longer than dinosaurs. The End
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