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BiologyFound on the outer continental shelves and upper slopes, on or near the bottom (Ref. 31367); sublittoral below 130 m (Ref. 11230). Young mostly pelagic off the outer shelves (Ref. 5578). Aggregations by sex are regularly observed (Ref. 6871). Feeds on bony fishes, shrimps and other crustaceans, cephalopods and other elasmobranchs (Ref. 247). Ovoviviparous (Ref. 205), with 2 to 4 young in a litter (Ref. 247). Gestation period is 2 years (Ref. 36731). Utilized for human consumption, the flesh most appealing dried salted or smoked (Ref. 6871). Also consumed fresh (Ref. 31367). Minimum depth reported from Ref. 6808.