Skip to main content

View Diary: Marine Life Series: Boring Sponges (40 comments)

Comment Preferences

  •  Just saw this comment thread (2+ / 0-)
    Recommended by:
    citizenx, Hens Teeth

    and, as a good and proper chemist and fan, wanted to respond.

    I am not aware of any material called "carbonic anhydrous".  But I do have a suspicion as to what is used, and I suspect that at least this much is known in the literature, but most likely the sources are VERY obscure.

    The pits formed are no doubt the result of a strong acidic material dissolving the calcium carbonate in the shell.  By the looks of the pictures, this attack is very well defined and localized.  In addition to calcium carbonate, shells, at least live ones, contain a significant amount of protein.

    Once again I will present a hypothesis (actually two):  the strong acid is likely to be hydrochloric because of the high chloride content of seawater and the analogy to humans: it in all of our stomachs, and that there is likely a proteolytic enzyme afoot as well.

    With no literature review (hey, it is Friday night, and I helped my brother in law cut his runaway lawn ALL DAY) I can only speculate, but I believe that these speculations are at least worth some thought and research.

    Warmest regards, Doc.

Subscribe or Donate to support Daily Kos.

Click here for the mobile view of the site