Seaking does not evolve further since it does not have an evolution of itself.
walrein, the evolved form of sealeo.
Omastar, the evolved form of omanyte
Level up.
Alakazam, the evolved form of Kadabra.
cherrim, evolved form of cherubi.
Pokemon 80 is slowbro the evolved form of slowpoke (can catch only in pearl)
Catch the evolved form of Elekid, they sometimes have one.
The evolved form is called Lickilicky im not kidding.
You can't catch whismur in Pokemon pearl or diamond but but you can catch its evolved form loudred with the pokeradar on the top of mt coronet.
DRIFLOON is the Pokemon. You can only catch him on Fridays at the Valley Windworks and if your referring to his evolved form its Drifblim.
Only for Pearl Because the evolved form of murkrow is exclusive to pearl
Poochyena cannot be caught in Pokemon Pearl. It's evolved form Mightyena however can be caught in Pokemon Diamond on Routes 214 and 215 with the Poke Radar.