Fucus virsoides J. Agardh is a brown alga of the genus Fucus. It lives in the intertidal zone. Fucus virsoides is exclusively linked to the Adriatic Sea. Today, the areal of this endemic species extends from the North Adriatic on the east coast to the Bay of Kotor and on the western shores to Ancona. The species is the most common and the most abundant in the northern Adriatic. Fucus virsoides is a perennial species, living in the areas which are not exposed to direct human pollution. Despite the fact that a lot of information about the biology of Fucus virsoides is missing, this species has certain characteristics that make it a potential bioindicator. According to its bioaccumulation capabilities it belongs to a group of accumulation indicators. Some studies have shown that Fucus virsoides accumulates isotopes of iodine and heavy metals (Fe, Zn, Cu, Cd, Ni, Pb, Cr, As). However, since there are few of these studies and they were undertaken without prior knowledge of the species biology, their results could not be interpreted as a real picture of environmental pollution. In order to achieve that additional research of bioindicator capabilities of Fucus virsoides are necessary. In the Adriatic Sea there are other species such as brown algae from the genus Cystoseira (Fucales order) that also have a potential bioindicator capacity.