biology question #4000



Reggie Lykins, a 9 year old female from Cincinnati asks on November 15, 2007,

Q:

I have two questions. 1. Do jellyfish have ears and if so can they hear well? 2. How many times can the same jellyfish sting you?

viewed 13356 times

the answer

Daniel Pauly, University of British Columbia professor of fisheries biology answered on November 15, 2007, A:

Jellyfish do not have ears.  However, jellyfishes have sensors that detect gravity and motion, and water movements cause the sensors to vibrate. Thus, some water movements might be perceived as a ‘sound’.

A jellyfish has many stinging cells all over its tentacles, and each stinging cell can discharge individually. Hence a jellyfish can sting you many times.

Add to or comment on this answer using the form below.
(required)
(required if you would like a response)
Note: All submissions are moderated prior to posting.
If you found this answer useful, please consider making a small donation to science.ca.