Grunion bluish-green backs and silvery sides and bellies. Their snouts are bluntly rounded and slippery. Silversides differ from true smelts of the family Osmeridae in that they lack the trout-like adipose fin. Young grunion grow rapidly and are about five inches long by the time they reach one year old and are ready to spawn. Adult fish normally range in size from with a maximum recorded size of (La Jolla, Ca., 05-11-05). Average body lengths for males and females are , respectively, at the end of one year; at the end of two years; and at the end of three years.
USS Grunion 1942. Captured Japanese records show no antisubmarine attacks in the Kiska area, and the fate of "Grunion" remained a mystery for 65 years, until the discovery in the Bering Sea in August 2007 of a wreck believed to be her. In October 2008, the U.S. Navy verified that the wreck is the "Grunion". The "Grunion" received one battle star for her World War II service. In 1998 Lieut. Col. Richard Lane purchased for $1 a wiring diagram from a Japanese cargo ship, the "Kano Maru", which had been active during World War II. Hoping to authenticate the document, Lane posted