you can usually catch them any where in the water, unless im wrong. im playing ruby now. :D
tentacool
In the lighthouse in Sunyshore city
In the National Pokedex, it is Tentacool. Should be the same for Platinum.
Like all games Tentacool evolves into tentacruel at LV30
you can go to cheatcc.com and find this code
no, you dont have to you probably can walk out the building and talk to him again but i play platinum now so somuone tell me where i can find tentacool!!!
Number 72 is Tentacool
tentacool and magikarp ... As you can also catch goldeen on emerald
you have to go to code breaker code and use the code to catch a mewtwo.
No.you have surf in certain parts of water.
just use surf on almost any part of ocean
you can't catch him in platinum but in soulsilver or heartgold you can catch him then trade it to platinum.