North Island Explorer: Guide to North Vancouver Island






































Flat-tip Piddock

Photo 1: Flat-tip Piddocks exposed from holes drilled into soft shale.


Flat-tip Piddock: Penitella penita


The common piddock is Nature's drill bit. This amazing shell looks like two halves of completely different species grafted onto each other. The rounded end is in fact the drill. It bores its way into soft rock by rotating this end. Here is another picture with the siphon extended.






Marine Life Guide to North Vancouver Island