The new update is out and contains some good additions to the town area. One of them is the opportunity to pick up prizes. Just like the farm, you can get treasure chests but these float on the ocean.
It seems that one of the pirate ships sank in a battle with the customs frigate and the chests are scattered around the oceans of the world.
Will you be lucky and get an unlocked one or will you spend five diamonds to get into it. The choice is yours.