Im working on decoding the symbols currently, but i assume they are just another slightly more advanced version of the unown.
The only thing you can dive for is the abyssal ruins.
There is no legendary Pokemon in Undella Bay.
Undella Town, and you use dive in four dark water spots to get to the abyssal ruins.
u need the HM06 dive which u get it in undella town. a lady wearing a white gown will give it to you if u talk to her
In Undella Town
To get to the Undersea Ruins you have to surf east from Undella Town. There will be four diving spots. Dive into either of them to get into the Undersea Ruins. To get dive you need to talk to a lady in Undella Town.
The only thing you can dive for is the abyssal ruins.
From Undella City, go east until you hit a body of water. Start surfing and you be in Undella Bay. There are some trainers and underwater ruins you can reach by diving in dark spots.
In Undella City, there is a girl off to the left of the Pokemon center in a white dress. Talk to her, and she will give you the HM Dive. You can then teach it to a Pokemon and enter the Abyssal Ruins.
There is no legendary Pokemon in Undella Bay.
Undella Bay in those dark spots in the water (not ripples) transports you to Abssyal Ruins or whatevar
Undella Town, and you use dive in four dark water spots to get to the abyssal ruins.
u need the HM06 dive which u get it in undella town. a lady wearing a white gown will give it to you if u talk to her
You Battle Her At Undella Town/City She Has The Same Pokemon As In The Last Game And Shes In The 2Nd House From The PokeCenter She Talks About The Abyssal Ruins =) Hope This Helps!!
you can get him at route 13, undella town (in the water of course), and undella bay
undella bay
It means arcius is thrre