Answer: dulse

AnswerCrossword Clue
DULSE

Edible red alga

DULSE

Edible seaweed

DULSE

Red seaweed used as food in Iceland.

DULSE
Edible seaweed.
DULSE
Seaweed.
DULSERed seaweed.
DULSESeaweed
DULSERed seaweed