Horsea evolves into Seadra at level 32 and evolves again into Kingdra if you trade Seadra while its holding a Dragon ScalesIt evolves at level 32
Horsea evolves at level 32
At level 55
horsea does not evolve into kingdra. you have to evolve your horsea into a sedra (at lvl 32). then you have to give it a king scale and trade it to someone for it to evolve into kingdra.
areodactl does not evolve:-)
Golduck does not evolve.