AoKiji's Bicycle

Admiral Aokiji is able to use a bicycle on the sea. Aokiji uses his devil fruit power, Hie Hie no Mi, to freeze the water in front of him into a thin narrow track. He is able to ride his bicycle across the sea because of this.

This techique was first seen when Aokiji met the straw hats. He was able to travel from island to island on his bicycle. Aokiji is one of the few devil fruit users who has adapted his powers into a efficient means of traveling the sea.