Talk:Hydra (genus)

message: are there any pictures I can get on the Hydra(genus)?
- I'm personally concerned about the main image at the top of the article as it appears overtly phallic. Can another shot not be taken from a less pleasing angle? Trying to learn here. Thanks.  — Preceding unsigned comment added by 195.59.199.204 (talk) 11:54, 17 March 2016 (UTC)
thread_title:  picture 

message: "mac and roni" needs a citation and attribution. Wikipedia does not claim that things are beautiful. -Silence 06:05, 24 March 2006 (UTC)
thread_title: Beautiful?

message: Isn't there a Hydra vulgaris as well?
:Yes, roni is my best frriend!! love mac! it's a synonym for Hydra attenuata (see ). AxelBoldt 19:09, 14 May 2006 (UTC)
thread_title: Hydra vulgaris?

message: we need to have more information about hydras.
:Yes--86.128.77.245 00:00, 2 July 2007 (UTC)
thread_title:  more information? 

message: I'm sorry but....biologically immortal?
Can we have more citations for this fact please?
I'm no biologist but this sounds like its been either entirely made up or misinterpreted.
:Citations is in the article. "Biologically immortal" doesn't mean that they live forever, it just means that their death probability doesn't increase with age. AxelBoldt (talk) 05:43, 13 January 2009 (UTC)
thread_title:  Biologically immortal? 

message: The picture of a hydra doesn't appear to be radially symmetric. I assume this statement means that they can form a spherical shape but if they're not always in this shape how can they be radially symmetric? Can someone who knows more about this expand on it. 212.140.167.99 11:42, 6 July 2007 (UTC)
thread_title: Radial Symmetry

message: The whole artical needs to be edited to show Hydra in italics since this is the genus name. By scientific standard, when referring to an organism by it's genus and/or species name, the name should appear in italics. "Hydras", however, need not be in italics since this is not the scientific name. Marv101 (talk) 12:54, 2 March 2008 (UTC)
thread_title:  Italics 

message: Wow, if you look at the history - tons of vandalism. I think semi-protection would be worthwhile. Timeroot (talk) 03:16, 18 February 2009 (UTC)
thread_title:  Semi-protection 

message: The schematic drawing of the nematocyst is incorrect for the following reason:
When triggered, the content of the cell is everted (like blowing the fingers out of an inverted rubber glove).
The barbs that are shown to shoot out in the third part of the drawing should remain stationary, while the thread everts through the barbs.  —Preceding unsigned comment added by 94.224.135.45 (talk) 18:32, 18 October 2009 (UTC)
thread_title:  Schematic drawing error 

message: I removed the following paragraph from the Morphallaxis section, because I have searched for hours, but I have not been able to find a single reliable source for the claims made therein. At the end, I added some claims from other sources that sported claims not noted in this article, but which stated that their source was this Wikipedia article.  The actual text I removed is in bold print (to include the text within the Citation needed template that is colored green):  
That text should remain on this talk page and not reintroduced to the article until a reliable source(s) can be found.– Paine (Climax!)  03:29, 8 November 2012 (UTC)
thread_title:  Paragraph removed 

message: Quote: "The controversial unlimited life span of Hydra has attracted the attention of natural scientists for a long time."
So, it seems there's a controversy about the senescence of the hydra. I found nothing about it neither in the article nor elsewhere on the net. Can somebody tell more about that controversy? And if there is a controversy, I don't understand why the article takes an one sided position stating adamantly immortality, only immortality, nothing else but immortality.
And, by the way, I saw on the net a careless confusion between very long age and immortality. I don't understand why that difference is minimalized or even ignored. It's of a huge importance.Srelu (talk) 02:35, 9 April 2016 (UTC)
replies: text: What you found and didn't find while doing your do diligent research appears to answer your question: the article content can only include what already exists in published, reliable, and hopefully secondary sources. Anything else would be original research. Which, it would also appear, may already be in the article anyway, since the article mentions controversy that apparently can't be verified to be discussed in any other place but here..
Cheers
Firejuggler86 (talk) 05:55, 30 April 2020 (UTC)

text: And the "life cycle" section doesn't explain anything about hydra death. Do they die of old age? Or do they die only due to external factors like starvation, dehydration, poisoning, being eaten, etc.? ~Amatulić (talk) 01:35, 25 July 2016 (UTC)

text: Most Hydra in  temperate climates die at the onset of winter, probably through starvation, but leave behind the sexually produced resting eggs which hatch in the spring.  Velella  Velella Talk   09:10, 25 July 2016 (UTC)
thread_title:  Controversy 

message: Schematic drawing of a discharging nematocyst / add size info, this is an encyclopedia, it is VERY important to mention the size!!!  — Preceding unsigned comment added by 2A02:587:410F:8100:7006:1E3A:DCA4:BE2C (talk) 13:58, 14 June 2016 (UTC)
replies: text: How about at Cnidocyte where there is a diagram and an electron micrograph showing the size under magnification?  Velella  Velella Talk   19:56, 16 June 2016 (UTC)
thread_title:  dimensions not mentioned 

message: I have added three additional sentences to this section, however, I feel that more should be described on the regenerative abilities of Hydras.--Mhedelund2017 (talk) 00:25, 28 January 2019 (UTC)
replies: text: This is the page I am working on for my Development Biology Spring 2019 course. Mhedelund2017 (talk) 21:26, 31 January 2019 (UTC)
thread_title:  Morphallaxis 

message: Iam a 51 year old women. Something which I believe could be a hydra has infested my hair, gums, my digestive system. I cant get any help from doctors at the va loma Linda,ca.
With all Seriousness this is not a Joke and I need Help. Something is seriously wrong. I've been dealing with this for 5 years and it taken it  destroying me it a viscous 3bweek cycle that I've endured month after month to years Alway the same I dobt know how I've lasted  this long .  If anyone  can direct this to anyone who can save me please do 2603:8001:4800:B6:C1E8:D8D0:45C0:25E3 (talk) 08:57, 8 December 2021 (UTC)
replies: text: Sorry, but Wikipedia never offers medical advice. For the record Hydras only live underwater.  Velella  Velella Talk   09:06, 8 December 2021 (UTC)
thread_title:  Hydras can they live on himans