This guy goes into hiding every now and then and will show up later larger than ever. Judging by the Spirorbid worm scars on the old/dark part of the shell, this must have been one of the first snails I put in with the original CUC 2 years ago. The Spirorbids were only around for a few months.
That Derasa is over 9" for scale. The snail is the size of a racquetball. I wonder how much of my alk and Ca it is consuming
That Derasa is over 9" for scale. The snail is the size of a racquetball. I wonder how much of my alk and Ca it is consuming

I spend so much time treating everything in this aquarium like it is a plant!