The Black Footed Limpet, called such because unlike the common limpet the soft snail-like organsims living in the shell is dark… I would show you but I haven’t had the heart to pull one of these guys off there rock and distrub them. Luckily, you can tell the difference from a common limpet because there shell has much deeper depressions, dark bands and a much more wiggly outline. They are one of my absolute favourites as was the first thing I painted which started marinemumbles.com, I explain more about that are illustrate the differences between the species more in this sketchbook tour.