https://etc.usf.edu/clipart/51200/51254/51254_pholas_dacty.htm
Pholas Dactylus (Linnaeus) | ClipArt ETC
This species is able to hollow out a home in a solid block of gneiss, one of the hardest rocks. To excavate its cell at the bottom of one of these gloomy...
pholas dactyluslinnaeusclipartetc