If your stuck at "Wheres Wakka" Then YES! When you see a purple dot on the map go to it and press X. It will then give you a number.
I hope this helps.
..There is one where you take a walk with Lulu.
..One where in Final Fantasy X you meet with Kimarhri., Theres one in that area.
..Another on the beach. You see kids playing and you climb the side of the cliff.
..Another where the water is on your FAR FAR right. (On the beach aswell)