# Which animal has the highest percentage of body water? **URL:** \ **Category:** Factual Questions\ **Created:** [April 30, 2013, 3:31am UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073 "2013-04-30T03:31:55Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Leo\_Bloom](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/leo_bloom/32/10377_2.png) [@Leo\_Bloom](https://boards.straightdope.com/u/Leo_Bloom)\ **Post date:** [April 30, 2013, 3:31am UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073/1 "2013-04-30T03:31:55Z")
See subject, suggested from the “fluid cat” thread, where as usual an adjective or simile was read literally for the sake of a yuck, but also as usual could have turned into a hijack, an interesting one, but a hijack nonetheless. Obviously, water and land animals have different requirements, so maybe we should have two classes of answers. Bacteria? Plants? Save them for a separate thread. So. Jellyfish have made their appearance. To these I counter sea cucumbers. ---
**Author:** ![Colibri](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/colibri/32/1841_2.png) [@Colibri](https://boards.straightdope.com/u/Colibri)\ **Post date:** [April 30, 2013, 3:52am UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073/2 "2013-04-30T03:52:45Z")
[Jellyfish are 95% water](http://www.nature.com/nature/journal/v150/n3799/abs/150234b0.html), so that’s going to be hard to beat. ---
**Author:** ![Gatopescado](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/gatopescado/32/5711_2.png) [@Gatopescado](https://boards.straightdope.com/u/Gatopescado)\ **Post date:** [April 30, 2013, 12:44pm UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073/3 "2013-04-30T12:44:02Z")
Paging Karl Pilkington! 😃 ---
**Author:** ![Colophon](https://avatars.discourse-cdn.com/v4/letter/c/f05b48/32.png) [@Colophon](https://boards.straightdope.com/u/Colophon)\ **Post date:** [April 30, 2013, 12:56pm UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073/4 "2013-04-30T12:56:50Z")
> [@Colibri](#): > > [Jellyfish are 95% water](http://www.nature.com/nature/journal/v150/n3799/abs/150234b0.html), so that’s going to be hard to beat. And yet against all the odds, Budweiser manages it. (Jellyfish was my first thought, too, but I was beaten to it so I’ll throw in some beer snark.) ---
**Author:** ![Mangetout](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mangetout/32/19_2.png) [@Mangetout](https://boards.straightdope.com/u/Mangetout)\ **Post date:** [April 30, 2013, 1:17pm UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073/5 "2013-04-30T13:17:41Z")
I wonder if those giant single celled marine organisms (such as [this one](http://en.wikipedia.org/wiki/Valonia_ventricosa)) might be more watery than jellyfish? ---
**Author:** ![Machine\_Elf](https://avatars.discourse-cdn.com/v4/letter/m/82dd89/32.png) [@Machine\_Elf](https://boards.straightdope.com/u/Machine_Elf)\ **Post date:** [April 30, 2013, 1:58pm UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073/6 "2013-04-30T13:58:13Z")
> [@Mangetout](#): > > I wonder if those giant single celled marine organisms (such as [this one](http://en.wikipedia.org/wiki/Valonia_ventricosa)) might be more watery than jellyfish? The Wikipedia article doesn’t mention their water percentage, but just judging from the opacity they exhibit in the accompanying photos, I’d guess their water percentage is similar to other plants, i.e. quite a bit less than 95%. ---
**Author:** ![Mangetout](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mangetout/32/19_2.png) [@Mangetout](https://boards.straightdope.com/u/Mangetout)\ **Post date:** [April 30, 2013, 2:02pm UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073/7 "2013-04-30T14:02:41Z")
I guess it depends on whether that opacity is a surface phenomenon or not. ---
**Author:** ![TriPolar](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/tripolar/32/3008_2.png) [@TriPolar](https://boards.straightdope.com/u/TriPolar)\ **Post date:** [April 30, 2013, 2:14pm UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073/8 "2013-04-30T14:14:33Z")
Homeopathic animals. ---
**Author:** ![Colibri](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/colibri/32/1841_2.png) [@Colibri](https://boards.straightdope.com/u/Colibri)\ **Post date:** [April 30, 2013, 4:31pm UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073/9 "2013-04-30T16:31:29Z")
> [@Colophon](#): > > And yet against all the odds, Budweiser manages it. Budweiser is an animal on your planet?:dubious: 😃 ---
**Author:** ![panache45](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/panache45/32/64_2.png) [@panache45](https://boards.straightdope.com/u/panache45)\ **Post date:** [April 30, 2013, 5:11pm UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073/10 "2013-04-30T17:11:26Z")
> [@Gatopescado](#): > > Paging Karl Pilkington! 😃 Yes, I believe Karl Pilkington has more water than a jellyfish. That was before he met his little companion. ---
**Author:** ![YogSothoth](https://avatars.discourse-cdn.com/v4/letter/y/8edcca/32.png) [@YogSothoth](https://boards.straightdope.com/u/YogSothoth)\ **Post date:** [April 30, 2013, 5:20pm UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073/11 "2013-04-30T17:20:40Z")
> [@Mangetout](#): > > I wonder if those giant single celled marine organisms (such as [this one](http://en.wikipedia.org/wiki/Valonia_ventricosa)) might be more watery than jellyfish? Wow, that is amazing! Never seen that before! ---
**Author:** ![j\_sum1](https://avatars.discourse-cdn.com/v4/letter/j/8baadc/32.png) [@j\_sum1](https://boards.straightdope.com/u/j_sum1)\ **Post date:** [May 1, 2013, 2:14am UTC](https://boards.straightdope.com/t/which-animal-has-the-highest-percentage-of-body-water/657073/12 "2013-05-01T02:14:59Z")
Ok, this is a cheat (and probably isn’t a winner anyway) but it does open up a different interpretation for “percentage of body water”. [Tetraodontidae](http://www.worldoceans.com/pix/c_spa07.jpg)