Please tell which species will be in Picture E. I found from rock (rocky shore).
I have seen as such ........no spiky thing ...I have no idea Dr. Patrick Joseph Schembri.
Looks like the body is smooth. I dont know it stands for one individual or one individual is having branches like tube
What I meant by "perisarc of a hydroid colony" is that you have a dead hydroid colony so all that remains is the external 'cover' (= perisarc) of the colony and all the organic tissue has decomposed. Each chamber would once have housed an individual zooid. Do a Google image search for examples (use "perisarc of a hydroid colony" as your search term).
Although the pictures are not good, I think it is a colony of a Bryozoa, Gymnolaemata, Ctenostomata. These animals have the skeleton leathery, chitinous or gelatinous, not calcified.
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