You are as much a part of it as anybody....
>As for the marine iguanas, It isn't until they reach a rock with a
>healthy growth of underwater vegetation that they hold on to the
>substrate with their claws. Because of the surf these animals must
>hold on with "all fours." In calmer areas I imagine holding on with
>hind limbs may facilitate foraging as they could move their anterior
>end in arcs to reach food without repositioning.
I wonder, since they also go deeper (i.e. out of the surf zone) if maybe
they do browse or graze, walking.
>I've noticed that no one has mentioned sources of vegetation
>growing underwater (Or for that matter submerged land based
>vegetation) nor have they mentioned tail marks in the preserved
>sediment.
There is no plant material preserved in the Cocnino, either as compression
or impression. This is not surprising, since even in underwater dunes
(which mimic all of the features of subaerial dunes) the sand is too
unstable to permit growth.
Art
http://chadwicka.swau.edu