Walrein swims all over in frigid seawater while crushing icebergs with its grand, imposing tusks. Its thick layer of blubber makes enemy attacks bounce off harmlessly. It shatters drift ice with its strong tusks. Its thick layer of blubber repels enemy attacks. It shatters ice with its big tusks. Its thick blubber repels not only the cold, but also enemy attacks.
Pokédex entry #365
Walrein in Pokémon GO
It's possible to hatch Walrein from an egg?
No, Walrein can't be hatched.
Which are Walrein’s strengths and weaknesses?
Walrein is a ice and water type Pokémon. ice type pokémons are strong against grass, ground, flying, dragon pokémons but weak against water, ice pokémons. water type pokémons are strong against fire, ground, rock pokémons but weak against water, grass, dragon, electric pokémons.