Every 3 days the water flow changes in shoal cave check the cave each day to see.
You literally have to wait for hours. You are currently on high tide and must wait for low tide. Personally, I am waiting for high tide!
somewhere in shoal cave somewhere in shoal cave
Shoal Cave above Mossdeep City
On B3F of Shoal Cave(Low Tide)
Shoal Cave, north Mossdeep City
You can find a spheal in shoal cave, there are also lots of water pokemon that can learn ice type moves. Ex. Kyogre, Swampert, Golduck.
Shoal Cave, north of Mossdeep city.
Evolve Snorunt which can be found it shoal cave in the ice bit
You can find it at Shoal Cave.
If you collect enough Shoal Salt and Shoal Shells, the Old Man will make you a Shell Bell. The Shell Bell restores HP whenever the holder deals damage.
A "Shell Bell" as obtainable on Pokemon Ruby/Saphire/Emerald/ is a hold item that is given to you by an elderly man located in Shoal Cave, witch itself is located just north of Mossdeep city. If you obtain in the cave and give him four of each Shoal Salt and Shoal Shells, he will give you a "Shell Bell", and thoes items are renewed every time you leave the cave. You can easily obtain Shoal Salt around the cave, but I have not yet assotained Shoal Shells, I think they are thoes light blue rocks you see on the higher levels of the cave, but I havn't had the ability to get them.
To get a Crobat on pokemon Ruby you must evolve your Golbat. If you do not already have a Golbat you can find them in many places such as: Cave of Origin, Meteor Falls, Seafloor Cavern, Shoal Cave, Sky Pillar, and Victory Road.
In the shoal cave where there you find that item 'nevermeltice' Hard to find but it's possible ;) Note: you only can get there when is NOT under water (when you can find shoal salt and not shoal bell)