Clamperl grows while being protected by its rock-hard shell. When its body becomes too large to fit inside the shell, it is sure evidence that this Pokémon is getting close to evolution. It is protected by a sturdy shell. Once in a lifetime, it makes a magnificent pearl. When it evolves, it makes a mysterious pearl that amplifies psychic powers when it’s held.
Pokédex entry #366
Clamperl in Pokémon GO
It's possible to hatch Clamperl from an egg?
No, Clamperl can't be hatched.
How many CP would Clamperl have after evolving?
If you’ve catched a Clamperl and you want to know how many points it would have after evolving, use this evolution calculator and find out easily. You just need to write your Bulbasaur CP and then click “Evolve”.
Which are Clamperl’s strengths and weaknesses?
Clamperl is a water type Pokémon. water type pokémons are strong against fire, ground, rock pokémons but weak against water, grass, dragon, electric pokémons.