Super Mario Sunshine/Sirena Beach blue coins

A blue coin is near the start point. Go straight and there is a standing block in front of you. Squirt it from the other side, and there's a blue coin!

Before you enter the hotel, spray the fires surrounding the hotel and one of them should have a blue coin.

All 30

 * 1) Underwater off the coast of the beach (all episodes).
 * 2) Spray the sign overlooking the sunset (all episodes).
 * 3) Spray the second torch from the left in front of the hotel (all episodes).
 * 4) Clean the M Graffiti by the hotel (episodes 7 and 8).
 * 5) Water the sunflower garden beside the hotel (episodes 2 thru 8).
 * 6) Underneath a hut (episodes 2 thru 8)
 * 7) Outside the hotel on the back of the second floor (episodes 2 thru 8).
 * 8) (Now inside) Corresponding Triangle marks [floors 1 and 2] (episode 7 and 8).
 * 9) Same as above (episode 7 and 8).
 * 10) Corresponding X marks [1F and 2F] (episode 7 and 8).
 * 11) Same as above (episode 7 and 8)
 * 12) Spray the skylight [3F] (episodes 3,4,5,7,8)
 * 13) M Graffiti [3F] (episodes 7 and 8).
 * 14) Spray the lamp [3F] (episodes 3,4,5,7,8)
 * 15) In the room behind the Boo poster [Attic to 3F] (episodes 3,4,5,7,8)
 * 16) Go back to the room, and spray the empty bookcase [3F] (episodes 3,4,5,7,8).
 * 17) From there, Ground Pound the different colored tile [3F to 2F] (episodes 3,4,5,7,8)
 * 18) Smash the box in the next room [2F] (episodes 3,4,5,7,8)
 * 19) Defeat the Boo [Attic] (episodes 4,5,7,8)
 * 20) Go to the middle of the Attic and spray the M graffiti [Attic] (episodes 7 and 8)
 * 21) In the air duct [Attic] (episodes 3,4,5,7,8).
 * 22) From the Attic, find the room with the mirror and spray the mirror [Attic to 3F] (episodes 3,4,5,7,8)
 * 23) From there, Ground Pound the table for to find a blue coin [3F to 2F] (episodes 3,4,5,7,8)
 * 24) (Back outside) Wash the two Nokis (episode 6)
 * 25) Same as above (episode 6)
 * 26) (Inside) M Graffiti above the door [Casino] (episode 5)
 * 27) Ground Pound the slot machines [Casino] (episodes 4 and 5)
 * 28) Put out the torch [Casino] (episode 4 and 5).
 * 29) Clean the Nokis (outside) (episode 6)
 * 30) Same as above. (episode 6).