Invasion

Invasion Description

None

Geographic Extent

Akkeshi, Hokkaido/Japan/Pacific Ocean (Imajima 1966e; Imajima 1967); Onagawa, Honshu/Japan/Pacific Ocean (Imajima 1966e); Hokkaido/Tsugaru Strait Pacific Ocean; Honshu/Tsugaru Strait (Imajima 1967); Onagawa, Honshu/Japan/Pacific Ocean (Imajima 1967)