Seasons and runs, about 15 Mar to 11 Aug 2027
Grunion runs
On spring and summer nights after the full and new moons, grunion wriggle up the beaches of California to spawn in the sand.
The California grunion is a small silverside that spawns on land. From about March to August, on the three or four nights after each full and new moon, just after the highest tides, the fish ride waves onto sandy beaches in southern California and Baja California. Females dig themselves tail-first into the wet sand to lay eggs, and males curl around them to fertilise them. The eggs stay buried until the next run of high tides, about ten days later, which washes them out to hatch. People gather on beaches at night to watch, and the state publishes expected run dates each year.
Still to be written: Leuresthes tenuis.