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Polyp extension matrix for Astrangia poculata. Scores ranged from 0 to 6, with 0 indicating all polyps were fully contracted (a, d) and 6 indicating all polyps are fully extended (c, f). Scores between 1 and 5 represent an intermediate state of polyp extension (b) where different proportions of polyps within a colony are fully contracted (d), active but not fully extended (e), and fully extended (f)
