10 Amazing Facts about Jellyfish
By Twisted Sifter on Tuesday, June 23, 2009 filed under ANIMALS, NATURE & SPACE VIDEOS.
The flower-hat jellyfish
1. Jellyfish first appeared about 650 million years ago and are found in every ocean, from the surface to the deep sea. Some are also found in fresh water
2. Medusa (plural medusae) is another word for jellyfish. Medusa is also the word for jellyfish in: Greek, Finnish, Portuguese, Romanian, Hebrew, Serbian, Croatian, Spanish, French, Italian, Hungarian, Polish, Czech, Slovak, Russian and Bulgarian
3. Since jellyfish are not actually fish, some people consider the term jellyfish a misnomer, and American public aquariums have popularized use of the terms jellies or sea jellies instead
Photograph by Trinko
4. A group of jellyfish is called a bloom or swarm
Jellyfish Bloom - Photo by David Doubilet
5. Jellyfish do not have a respiratory system since their skin is thin enough that the body is oxygenated by diffusion
6. Jellyfish do not have a brain or central nervous system, but rather have a loose network of nerves, located in the epidermis, which is called a “nerve net.”
The Australian Spotted Jellyfish
7. Jellyfish are composed of more than 90% water. Most of their umbrella mass is a gelatinous material (the jelly) called mesoglea, which is surrounded by two layers of cells which forms the umbrella (top surface). The subumbrella (bottom surface) of the body is known as the bell
Nomura Jellyfish (Yomiuri Shimbun/AFP/Getty Images)
8. Jellyfish are dioecious; that is, they are either male or female. In most cases, to reproduce, both males and females release sperm and eggs into the surrounding water, where the (unprotected) eggs are fertilized and mature into new organisms
9. Box jellyfish venom is the most deadly in the animal kingdon and has caused at least 5,568 recorded deaths since 1954. Each tentacle has about 500,000 sindasites which are harpoon shaped needles that inject venom into the victim
10. The lion’s mane jellyfish is the largest known species of jellyfish. The Arctic Lion’s mane jellyfish is one of the longest known animals and the largest recorded specimen had a bell (body) with a diameter of 2.3 m (7 feet 6 inches) and the tentacles reached 36.5 m (120 feet). It was found washed up on the shore of Massachusetts Bay in 1870
Sources
- http://en.wikipedia.org/wiki/Jellyfish
- http://en.wikipedia.org/wiki/Box_jellyfish
- http://en.wikipedia.org/wiki/Lion%27s_mane_jellyfish
If you’re on Twitter or Facebook, let’s connect!
If you enjoyed this article, the Sifter highly recommends: The Largest Animal Ever
You need to log in to vote
The blog owner requires users to be logged in to be able to vote for this post.
Alternatively, if you do not have an account yet you can create one here.
Powered by Vote It Up
Twisted_Sifter
July 6th, 2009 at 6:02 pm<img src="http://thedailydairy.com/wp-content/uploads/2009/06/jellyfish-crop-circle_7mzbf_6648.jpg">
Bridgette
August 6th, 2009 at 5:55 amomg theres acttualy gaint jellyfish thats crazy!!
Twisted_Sifter
August 6th, 2009 at 5:55 pmSo crazy! Can you imagine swimming beside one of them? According to Wikipedia they can grow up to 2 meters (6 feet 7 inches) in diameter and weigh up to 220 kilograms ( 450 pounds) !
<img src="http://www.pinktentacle.com/images/jellyfish_invasion.jpg">
<img src="http://chikamuna.com/wp-content/uploads/2009/07/nomuras-jellyfish.jpg">
Tongue Eating Parasite That Becomes The Fish's Tongue | TwistedSifter
September 13th, 2009 at 5:56 am[...] If you enjoyed this article, the Sifter recommends: 10 Amazing Facts About Jellyfish [...]
seth
September 17th, 2009 at 5:51 pmThis is a good show. We watched the video. I think the most amazing jellyfish is the colorful medusa. I read the book "Swimmy" and wanted to learn more about medusae.
jed
October 12th, 2009 at 8:03 amsome jelly fish glow in the dark some dont bibye
Twisted_Sifter
October 12th, 2009 at 5:12 pmthanks for dropping by Jed! Aren't they a fascinating bunch?
ashely
October 23rd, 2009 at 12:33 amthese are intresting fact
Twisted_Sifter
October 23rd, 2009 at 4:19 amthanks for dropping by ashley! glad you enjoyed
The Sunday Selection | TwistedSifter
October 25th, 2009 at 3:22 am[...] Ten Amazing Facts about our friends the Jellyfish: [...]
lorna
December 7th, 2009 at 3:35 pmI always say:''But from where they come?''.
Thanks
Lorna
(Malta)
Arch 842 Sp2010 Hecker » Jellyfish, Jellies, Medusa: 10 Amazing Facts | TwistedSifter
January 12th, 2010 at 9:30 pm[...] Jellyfish, Jellies, Medusa: 10 Amazing Facts | TwistedSifter. Comments [0] Leave a Comment (All comments are moderated before they appear on the site.) [...]
links for 2010-01-13 - Nerdcore
January 14th, 2010 at 1:08 am[...] Jellyfish, Jellies, Medusa: 10 Amazing Facts | TwistedSifter (tags: Jellyfish Animals) [...]
Limbic Thoughts » Jellyfish
January 15th, 2010 at 10:20 am[...] VIA Share and Enjoy: [...]
Kevin Ferry
January 15th, 2010 at 11:21 pmloved this just shared - Thanks
Twisted_Sifter
January 15th, 2010 at 11:29 pmThanks Kevin! Glad you enjoyed, have a great weekend! Just followed you on Twitter
10 Amazing Facts about jellyfish «
January 16th, 2010 at 3:45 pm[...] Jellyfish, Jellies, Medusa: 10 Amazing Facts | TwistedSifter. Leave a Comment No Comments Yet so far Leave a comment RSS feed for comments on this post. TrackBack URI Leave a comment Click here to cancel reply. Line and paragraph breaks automatic, e-mail address never displayed, HTML allowed: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <pre> <del datetime=""> <em> <i> <q cite=""> <strike> <strong> [...]
10 Amazing Facts about Jellyfish…Cool :D « This is our site
February 16th, 2010 at 10:33 pm[...] (Source: http://twistedsifter.com/2009/06/10-amazing-facts-about-jellyfish/) [...]
phillydrifter
April 4th, 2010 at 2:26 amhttp://evogeneao.com/images/Evolution_poster_lg.g...
"In 1858, Charles Darwin and Alfred Russel Wallace independently
proposed a theory of biological evolution to explain the diversity of
life on Earth. Since then the fossil record and DNA studies have
added, and continue to add, overwhelming support for this view of
life's history. Evolution today is one of the best documented and
widely accepted principles of modern science. Life on Earth has
changed dramatically through time. The theory of evolution proposes
that through the process of natural selection and other natural events
stretching over millions of generations, living things diversify,
branching from one species into many. This means that all living
things are related to one another through common ancestry with
earlier, different life forms. In other words, if you follow your
family tree far enough back in time, you will find a common ancestor
not only with every other living thing, but with every thing that ever
lived."
not ganna tell
April 12th, 2010 at 4:58 pmwell i dont know about 650 mill. years ago
April 12th, 2010 at 5:24 pmnether do i i mean 650 milloun y. ago come on! do u evan bileve n jesus christ???
50 lb. Jellyfish Stings 150 New Hampshire People - Truckers Trucking Forum | Largest CDL Truck Driver Message Board
July 22nd, 2010 at 8:33 am[...] Amazing Facts about Jellyfish http://twistedsifter.com/2009/06/10-…out-jellyfish/ __________________ KC Forum Rules The Thanks Button Using Our Search Feature How To Post [...]
Emma
July 27th, 2010 at 7:06 pmjelllllllllies!!!