Grunion until the next tide series high enough reaches them 10 or more days later. Grunion eggs can extend incubation and delay hatching if tides do not reach them for an additional four weeks after this initial hatching time. Most of the eggs will hatch in 10 days if provided with seawater and the agitation of the rising surf. The mechanical action of the waves is the environmental trigger for hatching. The rapidity of hatching, which occurs in less than one minute, indicates it is probably not an enzymatic function of a softening of the chorion as in some other fishes.
USS Grunion Iwasaki. He sent them a translation of an article written by the officer who had commanded the merchant ship "Kano Maru". The article described an encounter with a submarine near Kiska Island in the Aleutians about the time the "Grunion" was reported missing. Several years later, John Abele, cofounder of Boston Scientific, met Dr. Robert Ballard, famous for discovering the RMS Titanic's wreckage. Ballard gave him advice on how to locate a shipwreck, and Abele decided to fund an expedition to find the lost submarine "Grunion". In 2006, Williamson Associates, using side-scan sonar, located a promising target at almost at