What are shoal shells and shoal salt for?

deep inside shoal cave which is north from mossdeep city

Keep checking the cave until the tide is down.

you can't whoever keeps putting the FAKE answers quit putting them on

if you keep looking every day the cave will dry up and the white piles on the floor will be shoal salt hope this helps pokefans OK listen to him hes a genius I'm going to do that thx

go to mossdeep and go to the north beach. surf upwards and u will find a small island with a cave. go inside and speak to the man......................................look around the shoal cave and...