LXH Posted March 5, 2012 Posted March 5, 2012 A special protein in the stinging cells of aquatic polyps called hydrasallows these little creatures to detect light despite lacking eyes. This article has a very nice picture showing the nervous system on the hydra's tentacles: http://www.theepochtimes.com/n2/science/science-in-pics-how-the-eyeless-hydra-sees-199810.html
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now