Once it slams its shell shut, it is impossible to open, even by those with superior strength.
Cloyster is a Water/Ice-type Pokémon. It takes double damage from Electric, Grass, Fighting and Rock, and resists Ice and Water. Its base stats add up to 525: the highest is Defense (180) and the lowest is Special Defense (45).
It is the second stage of its evolution line, along with Shellder. Its abilities are Shell Armor and Skill Link, and its Hidden Ability is Overcoat. It is in the Water 3 egg group and can breed with 36 species. In Scarlet and Violet it learns 18 moves by level-up and 39 by TM.
BASE STATS
ABILITIES
A hard shell protects the Pokémon from critical hits.
Maximizes the number of times multistrike moves hit.
The Pokémon takes no damage from sandstorms. It is also protected from the effects of powders and spores.