Acorn barnacle
![](https://phylogame.org/wp-content/themes/phylo/img/generated-card-images/br-DFE4E6-ocean-fresh-water-tundra-1.png)
Acorn barnacle
Semibalanus balanoides![Scale 6](https://phylogame.org/wp-content/themes/phylo/img/num/6.png)
![Diat: carbon-macromolecules , Hierachy 3](https://phylogame.org/wp-content/themes/phylo/img/num/carbon-macromolecules3.png)
![](https://phylogame.org/wp-content/uploads/2015/03/Semibalanus-balanoides.jpg)
8 POINTS
Animalia, Arthropoda, Maxillopoda
Acorn barnacles are filter feeders feeding on small organic materials such as zooplankton and small algae of size 2-3.
Habitats: rocky shore
Graphic by UK Marine