Answer 1:
OK , Kelp I know, but I am out of my depth here
and the pictures do not tell me what I need to
know - It almost looks like the hold fast has a
set of tube worms as the flat plate-like structure
and then there are some clams attached. In
addition, there are some blue-grey bits that look
like pieces of the Pliocene Sisquoc Formation. I
can say that, once a kelp has a hold fast in
place, indeed marine invertebrates will settle on
it as a sold place of attachment, but I do not
recognize the flat plate like structure. Best
to you |
Answer 2:
Yes, holdfasts are commonly attached to other
organisms.There are also many organisms that live
in and erode holdfasts. Some actually bore into
the holdfast but others are just nestlers, living
in spaces made by other organisms. The clam in
the pic is such a nestler. Holdfasts are rich
habitats and excellent for class
studies. Regards,
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