. Beginners' Zoology . Fig. 45. —CoKAL Polyps (tenta-cles, a multiple of six). Noticehypostome. r 32 BEGINNERS ZOOLOGY coating has apertures through which the polyps prp-trude in order to feed when no danger is near (Fig. 46).. F;g. 46. — Red Coral-line with crust andpolyps (^i^/;/tentacles).

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