THIS IS STILL A QUESTION:- in-game on Pokemon saphire, a woman on a small island standing just outside of the strange hut door on route 124 - where you can trade shards for evolution stones explains.
'' hey, do you know what, do you know what, you asnwer two things know what or not, (LOL) answer top (she responds you agree confo ended) answer bottom and its more text - , let me explain she ses - TRy using surf with sharpedo, it'll go zooming so fast and make you feel so great +_+...
also on bulbapedia, sharpedo / Pokemon I found this on the saphire column..
Sharpedo can swim at speeds of up to 75 mph by jetting seawater out of its backside. This Pokémon's drawback is its inability to swim long distances.
i havent been able to prove this theory yet because I'm currently trying to catch a sharpedo +_+
Long question is, someone please try this...