Jolly Roger Bay

Jolly Roger Bay is the first underwater course. It is known for it's highly praised song and difficult 100 coin star. It features quite a few unique assets such as the ship, the stone pillars, and the unagi eel.

Geography
As mentioned previously, Jolly Roger Bay is a mainly underwate course, with not much above water. The starting area is a beach with a few rocks, and immediately visible is a cannon, some stone spires, and, in the second mission onward, an abandoned pirate ship. Underwater has fish, clams, even more rocks, and the entrance to a cave. The cave has strange collapsing stone pillars and electrocuting treasure chests.

Missions

 * 1) PLUNDER IN THE SUNKEN SHIP
 * 2) CAN THE EEL COME OUT TO PLAY?
 * 3) TREASURE IN THE OCEAN CAVE
 * 4) 8 RED COINS ON THE SHIP AFLOAT
 * 5) BLAST TO THE STONE PILLAR
 * 6) THROUGH THE JET STREAM
 * 7) 100 COIN STAR

Unagi Caves

 * Main article: Unagi Caves

Unagi Caves is a supposed secret area in Jolly Roger Bay. How to enter varies from different reports, but they always mention going through the tunnel in which the unagi lives.

Who was here before
In Jolly Roger Bay, there is evidence of people (probably pirates) being there before Mario, yet it is never acknowledged. For instance: The treasure chests, pirate ship, and collapsing stone pillars. It is clear that people were there before, and even left a sign. How did they get there? The water is surrounded by rock on all sides, so it doesn't seem likely that a boat could just sail over there. One theory is that, because there is an invisible and intangible ship in the sky, the boat was supposed to be seen falling from the sky for some reason. It is likely that there was no one there before, though, because the paintings worlds are allegedly created by bowser.