No. Grunion is one of two species of fish, therefore a noun.
A grunion is one of two types of small fish of the genus Leuresthes, which can be found along the coast of Mexico and southern California.
As long as it takes.
The Beverly Hillbillies - 1962 The Grunion Invasion 9-13 was released on: USA: 5 January 1971
barnacles, plankton, and other small creatures
Moon lit night
Grunion are typically caught either during the full moon or two later, during the full moon or the new moon. Google "Cabrillo Museum" where there is additional information on the best moths and methods to take grunion.
Is it Grunion?
Grunion
Great white sharks, gar, goosefish, globefish, groper, grunion.
Pierre Brosseau has written: 'Grunion apprend le soccer' -- subject(s): Football association
Grunions are most commonly found from Point Conception, California, to Point Abreojos, Baja California.