Super Mario Sunshine/Noki Bay blue coins

under the little land sticking out that is right next to the waterfall, is a blue coin. The grandfather is on that little piece of land. First appears in episode 1, uncork the waterfall. Also, if you spray every brown block, the wall will open up to reveal a pathway, and blue coins. Be sure that when your done fighting Glooper Blooper in the fifth episode, and you drop down, you spray all of the vases. One of the vases will have a blue coin