You can't find Vibrava on Pokémon Platinum
Tentacruel doesn't evolve, it is the final form of that pokemon. If you mean what level does Tentacool evole it is level 30.
To find a shiny stone in platinum you have to dig in the underground tunnel.
tenticool evolves into tentacruel
It's impossible to find Mewtwo in Platinum.
It evolves into a tentacruel at level 30. If you catch one above that level however, it will evolve the next time you level up.
Like all games Tentacool evolves into tentacruel at LV30
it is Tentacruel
The same Pokemon you find in Diamond and Pearl. Tentacruel, Magikarp, Golduck, Psyduck, Seaking, Goldeen, Seel, Dewdong, and rarely for me Gyarados. But their are much more than just that. Thanks for letting me answer your question!
A trainer on route 223 outside of sunyshore city on your way to the Pokemon league.
Between Pokemon league* and sunyshore *the south one
Pokémon that can be found in the Survival Area in Pokémon Platinum are Rattata, Raticate, Banette, Graveler, Wingull, Pelipper, Machoke, Tentacruel, Horsea, Seadra, Magikarp, Gyarados, Relicanth, Mankey, Primeape and Krabby.
These are the Pokemon you can find in Pokemon Diamond, Pearl, or Platinum in Route 221 (Some are version exclusive): Wingull, Floatzel, Roselia, Shellos, Gastrodon, Sudowoodo (Pearl and Platinum only), Stunky (Diamond only), Skuntank (Diamond only), and Girafarig. (Platinum only) You can find these Pokemon by surfing: Tentacool, Tentacruel, Wingull, and Pelipper. And fishing: Magikarp, Finneon, Lumineon, Gyarados, and Clamperl. (Diamond and Pearl only) You can encounter Farfetch'd during a swarm on Route 221. Nidorina and Nidorino can also be found using the Poke Radar. (Nidorina is common in Diamond, Nidorino is common in Pearl) The rarest Pokemon you can find are: Wingull, Shellos, Gastrodon, Roselia, Tentacruel, Pelipper, Clamperl, Nidorino (in Diamond), and Nidorina. (In Pearl)
The Pokemon are Chatot,Tentacool,Tentacruel,Floatzel,Gastrodon west sea,Shellos west sea, Finneon,Gayarados, Lumineon,and mr.mime
Tentacruel is not in it's final stage of evolution, and could be evolved further. And it's last evolution u need a tentacruel to hold a razor fang and level it up to LV. 83 and it will evolve into Tentafang. Have Fun with Tentafang!!!
Tentacruel learns hydropump at level 49 friend
Tentacruel is #73 in the national pokedex, and it is a Water-Poison type Pokemon.