It suppose to evolve at level 25. Try leveling it up again. Maybe you press the B button, while it was evolving and didn't pay attention.
Mantyke can only evolve when leveled up like this:Have Mantyke, remoraid, and three other Pokemon in you party. Have mantyke first in the party. Level it up. There! You have a mantine!
Go to Sunyshore City or Route 223 and surf (Having a 10% chance of finding it at both area's) at levels 30-45 at Sunyshore and at levels 30-40 at Route 223. Hope it helps!! Info also came from =http://pokemon.marriland.com/platinum/pokedex/
Route 222
To get an Octillery, you have to go to pastoria city and fish a remoraid. Then you have to level it up get it to be an octillery.
remoraid will evolve into octillery at level 25.
your remoraid must be at level 25 to evolve your remoraid hint don't evolve remoraid yet first you must have remoraid in your party next put a mantyke in your party after level up your mantyke while you have remoraid in your party and your mantyke will evolve into mantine!
yes, remoraid evolves into octillery
remoraid evolves at level 25
Remoraid Evoles into Octillery at level 25. :)
Remoraid evolves in Octillery at Level 25
Remoraid evolves at level 26 into Octillery 8]
Remoraid evolves into Octillery at Level 25.
At LEVEL 25, Remoraid evolves into Octillery. Hope I helped!
To evolve mantyke into mantine, you need to level it up with remoraid in your party.
if you have remoraid in your party at any level
it evoles when you have a remoraid in your team