Copepod Ommatokoita elongata (Grant) in the Eyes of the Greenland Shark—a Possible Cause of Mutual Dependence

IN July 19591, and in July–August 1960, I had the opportunity to take part in Greenland shark fishery with Norwegian commercial sealing vessels in east Greenland waters. Data on this shark were collected, supplemented with information received from experienced Greenland shark fishermen.