Picture of furcellaria lumbricalis and knotted wrack from the Furcellaria-zone.
Way of life
In Swedish waters, furcellaria lumbricalis bushes
are large, up 20 cm, but are sparsely branched. In the Baltic, they are
shorter, 10 cm, but more densely branched, while in the Gulf of Bothnia
they are at the most 0,5 dm tall. Deep living individuals, i.e. deeper than
15 m can be unbranched or have very few branches.
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