Eight robust arms of equal thickness with rounded tips. They are 4 to 5.5 times the length of the mantle. Two rows of dark-edged, white, circular suckers on purplish red underside of each arm(1). No ridge around the lateral periphery of the mantle (2) . Surface of mantle and head almost smooth (3). Opening to mantle cavity (4). Exhalant funnel protruding from mantle cavity to eject water to propel it (5).
Falmouth, Cornwall, England, in unusually hot summer, August 2022 © J. Chatfield.