This small shell called the Zebra Nerite does not grow larger than 11 millimetres in diameter and is not always easy to find on the coasts of our islands
Marine snails which are part of the Nerite family often have small teethlike protrusions which can often be found on the mouth plate (columella fold), the calcerous part at the opening at the bottom of the shell where the slug’s body moves to the outside.
This snail and shell species has quite a name in English: the Bleeding Tooth Nerite. It is kind of logical though if you take a good look at the shell this snail species builds for itself.