Common periwrinkle
![](https://phylogame.org/wp-content/themes/phylo/img/generated-card-images/br-DFE4E6-ocean-fresh-water-tundra-1.png)
Common periwrinkle
Littorina littorea![Scale 5](https://phylogame.org/wp-content/themes/phylo/img/num/5.png)
![Diat: herbivore , Hierachy 2](https://phylogame.org/wp-content/themes/phylo/img/num/herbivore2.png)
![](https://phylogame.org/wp-content/uploads/2015/03/Littorina-littorea.jpg)
9 POINTS
Animalia, Mollusca, Gastropoda
This is a grazer that can feed on top of larger algae. Periwrinkles were an important food source for people in many parts of the UK.
Graphic by UK Marine