Grunion The normal lifespan of the grunion is three to four years, although individuals up to five years old have been found. Their growth rate slows after the first spawning and stops completely during the spawning season. Consequently, adult fish grow only during the fall and winter. This growth rate variation causes annuli to form on the scales, which have been used for determining ages. California grunion spawn on beaches from two to six nights after the full and new moon beginning soon after high tide and continuing for several hours. As a wave breaks on the beach, the grunion swim
USS Grunion it on a Japanese naval historical website, asking if anyone could help. He was contacted by Yutaka Iwasaki, a Japanese naval historian, who not only authenticated it, but suggested he knew what happened to the "Grunion". Lane contacted ComSubPac, and their public affairs officer, Darrel Ames, posted the information on ComSubPac’s "Grunion" website. When the "Grunion" disappeared in 1942, her captain, Lt Cmdr Abele, left behind three sons – Bruce, Brad, and John. For nearly 65 years they had been searching for information about the loss of their father’s boat. When the Abele brothers encountered the post, they contacted Yutaka