Modern specimen of the tulip snail *Fasciolaria tulipa* with numerous small holes created by the boring sponge *Cliona celata*. These dwelling traces are called *Entobia.* Specimen is from Florida and is part of the teaching collections of the [Paleontological Research Institution](http://www.priweb.org), Ithaca, New York. Length of shell is approximately 10 cm. Model by Emily Hauf.