Beach Salts?

Some bumblebees on the beach, presumably licking salts and perhaps other minerals off the seaweeds. I don’t recall ever noticing this before.

The seaweed was tangled with the dead Horseshoe Crab I posted about on Tuesday, so first I thought they were scavenging the corpse. But of course, they’re bees, that is, wasps who gave hunting for meat to hunt for pollen and nectar.