The maximum size of adult Japanese bobtail squid is 2.5 cm in mantle length (ML), and its body consists of large fins and a short and dome-shaped mantle surrounded by an iridescent belt.
The maximum size of adult Japanese bobtail squid is 2.5 cm in mantle length (ML). The body consists of large fins and a short and dome-shaped mantle surrounded by an iridescent belt. 
