Buizel's twin tails do not only allow these pokemon to propel themselves through the water as surely as the fins of most water pokemon; they also allow them to fly short distances through the air. In the wild, this enables the Buizel to catch and eat Mantyke, whose wings can not yet carry them far above the water, but humans have put these pokemon to a far more industrious use.
There are many pokemon which can carry or pull riders and cargo across or above water, and a few, such as Pelipper, who can do both. But most of Sinnoh's birds are too fierce to easily tame or too small to comfortably carry a rider, and most of Sinnoh's water pokemon are only at home in sea water or on riverbeds. Thankfully, Buizel's maneuverability, speed, small size and deceptive strength make them uniquely adapted for transportation around the rocks and rapids of Sinnoh's rivers.
The earliest riverboats in Sinnoh were small wooden platforms pulled by Buizel, and even with modern technology, Sinnoh's lakes and rivers are still predominately navigated by Buizel raft. Technology has dramatically improved the raft's design. Humans and cargo alike are much less likely to fall than their ancient counterparts, who were often forced to abandon their goods, grab their Buizel by their life preserver necks, and desperately to swim to shore. Tourists have joined travelers in this era, for there are few traditions in Sinnoh quite like being carried in a fast-moving Buizel raft, the wind from their propellers whipping past the rider as they navigate through land, sea, and air – often all three in the same ride. To add to the excitement, trainers began racing Buizel rafts; and what began as dangerous travel for merchants is today one of Sinnoh's most popular sports.