| Supertype | Pokémon |
|---|---|
| Subtype | Basic |
| HP | 70 |
| Types | Water |
| Attack | Rain Splash |
| Attack cost | Colorless |
| Artist | Saya Tsuruta |
| Rarity | Common |
| Pokédex | 422 |
| Evolves to | Gastrodon |
Shellos
There’s speculation that its appearance is determined by what it eats, but the truth remains elusive.
Vendor Information
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It wraps its opponent in its gas-like body, slowly weakening its prey by poisoning it through the skin.
Evolving Skies
It emits ultrasonic waves as it flutters about, searching for its prey—bug Pokémon.
Base
A host-parasite pair in which the parasite mushroom has taken over the host bug. Prefers damp places.
Scarlet & Violet
It scatters cotton all over the place as a prank. If it gets wet, it'll become too heavy to move and have no choice but to answer for its mischief.
Related products
Sword & Shield
The cotton on the head of this Pokémon can be spun into a glossy, gorgeous yarn—a Galar regional specialty.
Sword & Shield
As it grows inside its shell, it uses its psychic abilities to monitor the outside world and prepare for evolution.
Sword & Shield
When it uses its special stick to strike up a beat, the sound waves produced carry revitalizing energy to the plants and flowers in the area.
Sword & Shield
The faster a Thwackey can beat out a rhythm with its two sticks, the more respect it wins from its peers.
Sword & Shield
A constant collector of information, this Pokémon is very smart. Very strong is what it isn't.
Sword & Shield
They lay their eggs deep inside their nests. When attacked by Heatmor, they retaliate using their massive mandibles.
Sword & Shield
It scatters cotton all over the place as a prank. If it gets wet, it'll become too heavy to move and have no choice but to answer for its mischief.
Sword & Shield
By drumming, it taps into the power of its special tree stump. The roots of the stump follow its direction in battle.



