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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Seaweed and kelp.:

ALGA: Kelp or Seaweed
ALGAE: Seaweed and kelp.
ALGAE: Seaweed and kelp, e.g.
ALGA: Seaweed or kelp