In Pokemon Diamond, if you have the sinnoh pokedex(that means you have not found all the Pokemon in the sinnoh region)number 80 is barboach. If you have the national pokedex, number 80 is slowbro. I hope that helps.
Well, since there is no number 117 in the local pokedex in Pokemon Diamond, we have to look into the national pokedex. In the national pokedex, number 117 is Seadra. Number 117 in the Sinnoh Pokedex is Wooper, can be found in the great marsh or on route 212