Common name: Rockweed

Fucus is a genus of brown algae commonly found in the intertidal zones of rocky seashores. Species within this genus, such as Fucus vesiculosus, are known for their distinctive air bladders that help them float. These algae are not typically kept in home aquariums due to their preference for cooler water and high flow environments. However, they play a crucial role in the wild as a food source and habitat for various marine organisms.

1. 
   Common name: An Chasfheamainn

   Scientific name: Fucus spiralis
2. 
   Common name: Bladder Wrack

   Scientific name: Fucus vesiculosus