G'day Laurence,
In reply to your message to everyone on 09 January 1996
 LC> I have a question directed to any diver with
 LC> Underwater Naturalist or Marine Biology experience:
 LC> Have you ever noticed that sea turtles generally have a very clean
 LC> carapace, although they live their entire life at sea, except for
 LC> a few hours per year laying eggs on a beach?
 LC> How is this possible? These creatures can have a life span
Probably a layer of mucus covering the shell, either that or they
attract a slight covering of weed which prevents barnacles etc
from getting a foothold.
Alan
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