Shellos #422

Evolution family

Shellos is part of a two-member family.

217. Shellos_shiny
#422 Shellos
(West Sea form)
50 Shellos_candy
#423 Gastrodon
(West Sea form)
Shellos_east_shiny Shellos_east
#422 Shellos
(East Sea form)
50 Shellos_candy
Gastrodon_east_shiny Gastrodon_east
#423 Gastrodon
(East Sea form)


300?cb=20200116150833 Shellos #422

West Sea

300?cb=20200116150836 Shellos #422

East Sea

Method Maximum CP Details

(weather boosted)
In wild since 2019 May 17Increased spawns in:
Pokémon Spotlight Hour: 2021 Aug 17 (West Sea)
Pokémon Spotlight Hour: 2021 Aug 10 (East Sea)
Lake Legends Event: 2020 Nov 24 – 30
649 Increased chance/Previously in:
7-km – Ultra Unlock Part 2: Space: 2021 Aug 6 – 17 (both worldwide)
Raid Battles

(weather boosted)
Tier 1 CP 3,166Visit List of Raid Bosses changes for complete appearance
Research tasks
486 Field Research:
Make 7 Great Curveball Throws: Ultra Unlock Part 2: Space (both worldwide)
Special Research/Timed Research:
Ultra Unlock 2021: Space – 4th part: Make 7 Great Curveball Throws (East Sea)
Ultra Unlock 2021: Space – 4th part: Make 7 Nice Curveball Throws in a row (West Sea)

 Best moveset for Shellos – West Sea

When fighting Pokémon in Gyms, Shellos (West Seagreatest )’s attacks are Mud-Slap and Water Pulse. This moveset has the most overall DPS and is also the finest for PVP encounters.


  Mud-Slap 12.9 dps
  Water Pulse 26.3 dps


  Mud-Slap 12.9 dps
  Water Pulse 26.3 dps


 All moves

Quick move Damage EPS DPS
  Mud-Slap 18 8.6 12.9
  Hidden Power 15 10 10
Main move Damage EPS DPS
  Mud Bomb 55 -14.3 23.9
  Water Pulse 70 -15.6 26.3
  Body Slam 50 -17.4 26.3

The moves indicated in green benefit from the Same Type Attack Bonus and deliver 20% more damage.


Shellos is a sea slug-like Pokémon whose appearance varies greatly depending on the sea in which it is situated. Both types, however, have amorphous, slug-like bodies. They have mantles covering the upper half of their bodies, much like actual sea slugs. They feature bulbous heads and four little feet rather than one huge foot like true sea slugs. In addition, both kinds feature black oval-shaped eyes, small noses, large yellow lips, and yellow borders around their eyes and mantles.

The bottom of the West Sea form is white, while the mantle is pink. The mantle is covered with tiny spike-like protrusions. A ring of pink fleshy bumps on its head resembles the gills of a nudibranch.

The underside of the East Sea form is green, while the mantle is blue. The shell features two flap-like protrusions that look like cerata. These protrusions are yellow-lined. Two white-tipped tentacles resembling rhinophores protrude out from its face on its head.

The Nurse Joy from Gateway to Ruin! explained that Mount Coronet’s creation caused the allopatric speciation event, which split the original population of Shellos in two. As a consequence of environmental changes and population isolation, Shellos’ color and other morphological traits started to vary throughout time. The emergence of West Sea Shellos is said to have been impacted by warm ocean waters, while East Sea Shellos is thought to have been influenced by cold ocean waters. It is also claimed that a Shellos’ shape is influenced by food, however this has yet to be verified. The two forms may still interbreed; the offspring assumes the mother’s or father’s shape if bred with a Ditto. When Shellos is pressed or squeezed, a mystery purple fluid oozes out of its body, which is supposed to be sticky and comparable to greasy perspiration. West Sea Shellos may lengthen their necks to extraordinary lengths in the anime. It is uncertain if the East Sea version can do the same. Shellos live on the beach. They are thought to have exceptional regeneration ability. Plankton is the species’ main food. Shellos may live on land or in the water, yet being on land for too long causes its skin to dry up. ***