According to my findings shoal cave changes either every 3 hours or 3 days keep going into shoal cave until the low tide is there.
According to the Bulbapedia, it is every 6 hours that it is either hi tide or low tide.
Chat with our AI personalities
when the tide is high you use surf into a cave and surf around if you see a rock with something blue click it and you get a shoal shell.
It's the same in real world,check the clock in your house in Pallet Town.When the time is afternoon,the sea is low tide.When the time is morning,the sea is high tide.To make sure that the shoal cave is low tide or high tide,go in shoal cave exactly 6pm or 6am. B)
You have to wait for high tide.
On B3F of Shoal Cave(Low Tide)
You cant get snorunt in leaf green,you must get it in Ruby/Sapphire/Emerald and trade it,snorunt is found inside the shoal cave when its in low tide