If you find a level 44 spheal in the wild (i think you're talking about one of the last towns in Pokemon white but it doesn't really matter) all you have to do is level it up two more times to get it to the last evolvation.
-gamerhelperz
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Yes. You just have to level the Spheal up again and it will evolve!
level 32
Spheal evolves at level 32 into Sealeo. Sealeo evolves into Walrein at level 44. http://serebii.net/pokedex-dp/363.shtml
At lvl 32 spheal evolves into sealeo. hope it helped :D
Level 44 :D