> I have several shells with predator drill holes in them. Concave holes are made by moonsnails using a radula. Vertical sided tubular holes are made by oyster drills. <
Unfortunately, this is an overgeneralization. Muricids and naticids can make either shape.
>Does anyone know what mechanism oyter drills use? <
Both use a combination of rasping with the radula and secreting shell-dissolving chemicals.
Dr. David Campbell
Old Seashells
University of Alabama
Biodiversity & Systematics
Dept. Biological Sciences
Box 870345
Tuscaloosa, AL 35487-0345 USA
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That is Uncle Joe, taken in the masonic regalia of a Grand Exalted Periwinkle of the Mystic Order of Whelks-P.G. Wodehouse, Romance at Droitgate Spa
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