Its hard shell repels any kind of attack. It is vulnerable only when its shell is open.
Shellder is a Water-type Pokémon. It takes double damage from Electric and Grass, and resists Fire, Water, Ice and Steel. Its base stats add up to 305: the highest is Defense (100) and the lowest is Special Defense (25).
It is the first stage of its evolution line, along with Cloyster. 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 14 moves by level-up and 30 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.