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BiologyFound in offshore shelf waters and on upper slope, mainly around the 100 m line (Ref. 3167). Depth range from 70-275 m (Ref. 03167), and from 463-676 m in eastern Ionian Sea (Ref. 56504). Feed on all kinds of bottom animals (Ref. 3167). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 8.3-9.2 cm long and 4.6-5.3 cm wide (Ref. 41303, 41251, 41311). Maximum length for female is 117 cm (Ref. 41333).