bonus prize: this song stuck in my head for 100 years

oh no, this video looks terrible!!!! here is another (which will probably look terrible as well) where you can see da crab more closely

do you know anything about the seasonal migration or breeding behavior of any of those two common species?

we saw them in droves at plumb beach on sept 2 of 2023 but they were nowhere to be found when we returned yesterday. we did see holes, but no crabbies :( we want to fondly admire them again!!