Dunklevia

If you scuba dive on the bottom of the seafloor,you may stumble upon a fin fossil. Give it to the scientist he will restore the fossil into a pokemon. It is known as Dunklevia. It is humongous ,bigger than a Wailord, and more ferocious than a Garchomp. It used to haunt the seas until it died out. Its ability is swift swim. Its signature move is crumbling crush. This move does double damage then the last time you used it. But it can only be used five times.