It attains a mantle length of at least 85 cm and probably over 1.15 m. The largest complete specimen of this species, measuring 2.3 m in total length, was found in Antarctica in 2000.
It reaches a maximum length of at least 85 cm and is probably even larger. The largest whole specimen of this species, measuring 2.3 m in total length, was discovered in Antarctica in 2000.