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Fig. 4. Variety of body positions of A. aculeatus during locomotion. (A)
Walking backward, arms coiled close to the body; (B) walking obliquely
backward; (C) walking forward, arms raised; (D) conical crawling (any
direction), mantle conical, arms tucked under or pulled close to the body; (E)
curled arm jetting; (F) walking, arms tucked under the body; (G) crawling
forward upright; (H) female (right) crawling dragging mating male (left); (I)
crawling (any direction), mantle upright, arms tightly coiled; (J) hopping,
arm tips coiled tightly; (K) Individual O-11 hopping on the hectocotylus. Note
small regenerating arms, including arm pair IV.