Hi Liam - We read your paper with interest as we and our colleagues (Tom Frazer and Jeff Shima) have been following the die-off of Dendropoma (now Ceraesignum) maximum for the past several years. Our extensive surveys in 2015, 2016, and 2017 suggest that C. maximum was completely killed in Mo'orea by August 2015. We have yet to see any recovery -- our most recent surveys (in June 2017 on the north shore of Mo'orea found 0 live C.maximum; our surveys in Temae in 2015 found 0 live C. maximum). We are therefore guessing that what you have documented are C. maximum (the dead snails) vs. D. platypus (the live "D. maxima"). Do you have any photographs of the live snails that you sampled? If so, we could quickly determine if they are C.maximum or D.platypus. D.platypus tends to have an aperture diameter of 4-8mm, whereas C.maximum is more typically 9-25mm.
Even if the live vermetids turn out to be D. platypus, it obviously doesn't change the importance of the other effects you documented on the corals.
-Craig Osenberg (firstname.lastname@example.org)
-Anya Brown (email@example.com)
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