USS Sea Devil (SS/AGSS-400), a Balao-class submarine, was the first ship of the United States Navy to be named for the sea devil, the largest of all rays, noted for power and endurance.

Jun'yō was a Hiyō-class aircraft carrier of the Imperial Japanese Navy (IJN). She was laid down as the passenger liner Kashiwara Maru (橿原丸), but was purchased by the IJN in 1941 while still under construction and converted into an aircraft carrier. Completed in May 1942, the ship participated in the Aleutian Islands Campaign the following month and in several battles during the Guadalcanal Campaign later in the year. Her aircraft were used from land bases during several battles in the New Guinea and Solomon Islands Campaigns.