bladder wrack


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bladder wrack

n.
Any of certain rockweeds, especially the widely distributed Fucus vesiculosus, having forked, brownish-green branches with gas-filled bladders.

blad′der wrack`


n.
a common seaweed, Fucus vesiculosus, of cold marine waters, having narrow brownish fronds with air-filled vesicles.
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On Friday, people are invited to St Mary's Island, in North Tyneside, to discover bladder wrack, edi-ble crabs, sea squirts and dog whelks at the coast.
The museum is laying on bus trips to Whitley Bay to explore rock pools - where they might spot creatures with such names as bladder wrack, edible crab, sea squirt and dog whelk - and learn from an ORCA expert about the seals, porpoises and dolphins which can be spotted from the top of St Mary's Lighthouse.
It is understood that the algae product is a dried meal made from Ascophyllum nodosum, a seaweed of the northern Atlantic Ocean, also known as Norwegian kelp or bladder wrack.