On the side of where you meet the girl, click her and she'll tell you she should have saved her coin. Go all the way down to where the ruined corn is, turn left and keep going, it'll give you the option to go left, the doubloon is there you just walk (or should I say swim) and then you go back.
You go to the far left of the screen (under the skull) and climb up the ledges until you reach the cannonry. Then you can climb up to the Corsair Cannonry and hire the man who once worked for Crawfish for 20,000 doubloons (Sheesh...I can't even get more than 700...) Then you climb up onto the mast and take the cannon making kit from beneath the flag. The kit works on any of the four cannons but the one on the bottom left is the most important. On the way back down to the ship, push the barrel of explosives into the water below the skull. Position the barrel under the Gold Tooth. If you fire the cannon and hit the barrel, the blast shakes loose the Golden Tooth and reveals the map piece. Happy sailing! ;)
under the bridge on skullduggery
Yes, there are several people in the Skullduggery Island on Poptropica. On of which is a deck hand. you can find him on the top left island.
you cross the bridge on the right (after you go in the island) go down, and go left. get the doubloon. Sorry i can't describe it very much just go to Youtube put in Skullduggery Island cheats and you find it.
Cross the bridge, then go down to the water. You can cross the river to the left, and you will find a doubloon there.
Cross the bridge, then go down to the water. You can cross the river to the left, and you will find a doubloon there.
Get the chicken feed by finding the doubloon under the bridge to the right of Main Street (cross over and then go left under the bridge to get it).
To get the truck from under the bridge you have to lower the left tire and the man will give you a camera.
The doubloon found under the bridge is used to buy the chicken feed in the general store.
go to the farm then turn around and go under the bridge then turn left. there will be a dubloon in the corner
Cross the covered bridge and talk to the girl there. Go right, then down and left to the water, and cross the stream to the left.
There is a DOUBLOON under the bridge to the right of Main Street. The girl says she made a wish. Go down the right side and then left, under the bridge.
you go under the bridge