I NEED THEIR SOFT BEARDS

in Hermit Crab Grotto there's a few there 3nd area.

edit: at the third lol first one are shrimps next are shimps then thats it.

I farm mine at Hoori Shrine Hell. The moment you entered the dungeon there is a Gankubi waiting for you surrounded by a bunch of Amagaeru. I normally go straight for the Gankubi, loot the drops, and leave dungeon.