I have a question directed to any diver with
Underwater Naturalist or Marine Biology experience:
Have you ever noticed that sea turtles generally have a very clean
carapace, although they live their entire life at sea, except for
a few hours per year laying eggs on a beach?
How is this possible? These creatures can have a life span
in excess of 100 years, yet have little or no barnacle growth
on the carapace! It seems to me that barnacles and some species
of pile worms will attach and grow on almost any hard surface,
yet I have never seen this on turtles around Hawaii when I 
dive there. "Nature" type TV shows I have seen, of
beached turtles laying eggs, show clean, barnacle-free
turtles, as well...Any ideas?
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