Wrack (seaweed)
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Wrack is part of the common names of several species of seaweed in the family Fucaceae. It may also refer more generally to any seaweeds or seagrasses that wash up on beaches and may accumulate in the
Fucus serratus, "toothed wrack"
Pelvetia canaliculata, "channelled wrack"
Accumulation of detrital seagrass wrack (Posidonia australis) at West Beach, South Australia
Wrack washed ashore in Brunswick, Georgia by Hurricane Matthew
Ascophyllum
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Ascophyllum nodosum is a large, common cold water seaweed or brown alga in the family Fucaceae. Its common names include knotted wrack, egg wrack, feamainn bhuí, rockweed, knotted kelp and Norwegian k
Ascophyllum nodosum
Ascophyllum nodosum natural range
Contrast between darker colored shoots and lighter colored fronds
Epiphytic red algae on knotted wrack at Roscoff, France