If
you have ever wondered:
why
your skin wrinkles up in the sea or after a bath...
-
why
you get so thirsty after eating bacon or crisps...
-
why
gardeners put salt on slugs...
-
or
just how some organisms get something for nothing... 
Alternatively,
if you have never been bothered by any of the above but you are a
student of Leaving Certificate Biology:
You
might just find this site useful!!!