) videotaped from submersibles. (2) Single individual taped in the Atlantic while moving downwards-- note the vertically oriented digestive-gland complex (spindle-shaped, bright reflection; courtesy R. Larsen, Fish and Wildlife Service, U.S.A., and R. Harbison, Woods Hole Oceanographic Institution, U.S.A.)
Young R.E., M. Vecchione and D.T. Donovan. 1998. The evolution of coleoid cephalopods and their present biodiversity and ecology. Payne, A.L., L. Lipinski, M.R. Clarke and M.A.C. Roeleveld (eds.),Cephalopod Biodiversity, Ecology and Evolution. S. Afr. J.mar. Sci. 20:393-420.