Gastrodon (West Sea) is a Water- and Ground-type Pokémon in Pokémon GO. At level 50, Gastrodon (West Sea) has a maximum CP of 2,628. It is weak to Grass-type attacks. The best raid moveset for Gastrodon (West Sea) is Mud-Slap and Earth Power.
| 1. | 9.36 | 10.42 | 224.1 | ||
| 2. | 9.04 | 10.08 | 216.6 | ||
| 3. | 8.50 | 9.47 | 203.7 | ||
| 4. | 7.83 | 8.72 | 187.5 | ||
| 5. | 7.77 | 8.66 | 186.3 | ||
| 6. | 7.72 | 8.60 | 184.9 | ||
| 7. | 6.74 | 7.52 | 161.6 | ||
| 8. | 6.71 | 7.48 | 160.8 |
| Damage | 19 |
|---|---|
| Energy | 13 |
| Weather boost |
|
| Duration | 1.5s |
| Damage window | 1.3s - 1.4s |
| Damage | 11 |
|---|---|
| Energy | 10 |
| Damage | 15 |
|---|---|
| Energy | 15 |
| Weather boost |
|
| Duration | 1.5s |
| Damage window | 1.1s - 1.4s |
| Damage | 9 |
|---|---|
| Energy | 8 |
| Damage | 100 |
|---|---|
| Energy | 50 |
| Weather boost |
|
| Duration | 3.5s |
| Damage window | 2.6s - 3.3s |
| Damage | 90 |
|---|---|
| Energy | 50 |
Earth Power has a 10.0% chance to:
| Damage | 140 |
|---|---|
| Energy | 100 |
| Weather boost |
|
| Duration | 3.5s |
| Damage window | 2.6s - 3.4s |
| Damage | 120 |
|---|---|
| Energy | 65 |
| Damage | 50 |
|---|---|
| Energy | 33 |
| Weather boost |
|
| Duration | 2.0s |
| Damage window | 1.3s - 1.8s |
| Damage | 65 |
|---|---|
| Energy | 40 |
| Damage | 65 |
|---|---|
| Energy | 50 |
| Weather boost |
|
| Duration | 3.0s |
| Damage window | 2.0s - 2.7s |
| Damage | 80 |
|---|---|
| Energy | 50 |
DPS and TDO for every Fast and Charged Attack combination Gastrodon (West Sea) can learn. Change the weather or the opponent to see how the order shifts.
Legacy moves are marked with an asterisk (*). You get them at special events or with an Elite Fast TM or Elite Charged TM. The table above lists every move Gastrodon (West Sea) can learn, with its DPS and TDO.
At Level 50, Gastrodon (West Sea) maxes out at 2,628 CP. Raid catches are 1,259 to 1,328 CP, or 1,574 to 1,660 CP weather boosted. Field and Special Research catches are 944 to 996 CP. The top of each range is a hundo.
| 2628 CP | |
| Level 50, 15/15/15 IVs | |
| 944 CP - 996 CP | |
| Level 15, 10/10/10 minimum IVs | |
| 1259 CP - 1328 CP | |
| Level 20, 10/10/10 minimum IVs | |
| 1259 CP - 1328 CP | |
| Level 20, 10/10/10 minimum IVs | |
| 1574 CP - 1660 CP | |
| Weather boosted, Level 25, 10/10/10 minimum IVs |
Gastrodon (West Sea)’s max CP at every level from 1 to 50. CP Calculator
| LVL | Max CP | LVL | Max CP | LVL | Max CP |
|---|---|---|---|---|---|
| 1 | 32 CP | 2 | 103 CP | 3 | 173 CP |
| 4 | 243 CP | 5 | 313 CP | 6 | 383 CP |
| 7 | 453 CP | 8 | 524 CP | 9 | 594 CP |
| 10 | 664 CP | 11 | 730 CP | 12 | 797 CP |
| 13 | 863 CP | 14 | 930 CP | 15 | 996 CP |
| 16 | 1062 CP | 17 | 1129 CP | 18 | 1195 CP |
| 19 | 1261 CP | 20 | 1328 CP | 21 | 1394 CP |
| 22 | 1461 CP | 23 | 1527 CP | 24 | 1594 CP |
| 25 | 1660 CP | 26 | 1727 CP | 27 | 1793 CP |
| 28 | 1859 CP | 29 | 1926 CP | 30 | 1992 CP |
| 31 | 2025 CP | 32 | 2059 CP | 33 | 2092 CP |
| 34 | 2125 CP | 35 | 2158 CP | 36 | 2191 CP |
| 37 | 2225 CP | 38 | 2258 CP | 39 | 2291 CP |
| 40 | 2324 CP | 41 | 2354 CP | 42 | 2383 CP |
| 43 | 2413 CP | 44 | 2443 CP | 45 | 2474 CP |
| 46 | 2504 CP | 47 | 2535 CP | 48 | 2566 CP |
| 49 | 2597 CP | 50 | 2628 CP |
Mega Pokémon that boost Gastrodon (West Sea)’s Water and Ground-type moves and give extra Candy and Candy XL when you catch Gastrodon (West Sea).
Mega and Primal Raid Bonus –In raids, an active Mega gives every other Pokémon a 10% damage boost, or 30% for attacks that share its type. Boosts from several Megas don’t stack; only the highest one applies.
Mega and Primal Catch Bonus –While you have a Mega out, you get extra XP and Candy for catching Pokémon that share its type, and for any raid boss. These bonuses don’t stack. At High and Max Mega Level, same-type catches also have a better chance of giving Candy XL.
Note on Primal Kyogre, Primal Groudon, and Mega Rayquaza| Pokédex Number | #423 |
|---|---|
| Height | 0.9 m |
| Weight | 29.9 kg |
| Region | Generation 4 |
| Can be traded | Allowed |
| Gender | ♂ 50% Male ♀ 50% Female |
| Buddy distance | 3 km |
| Released | Yes |
| Shiny released | Yes |
| Pokémon Home transfer | Allowed |
| Base Flee Rate | 6% |
| Catch rewards | |
| Additional Move Cost |
| Pokémon | Requires | Evolution |
|---|---|---|
Shellos (West Sea) |
| Gastrodon (West Sea) |
Gastrodon (West Sea)’s evolutions, regional forms and other variants in Pokémon GO.
Shellos (East Sea)
Gastrodon (East Sea)
Shellos (West Sea)
Gastrodon (West Sea)The illustration compares it with a 1.70 m (5′07″) Trainer.
| XXS | XS | M | XL | XXL |
|---|---|---|---|---|
![]() | ![]() | ![]() | ![]() | ![]() |
| 0.44 m | 0.45 m | 0.9 m | 1.35 m | 1.58 m |
Gastrodon (West Sea)'s height ranges from 0.441 m to 1.575 m, with the average being 0.9 m.
| Size | Lower bound | Upper bound |
|---|---|---|
| XXS | 0.441 m1′05″ | 0.45 m1′06″ |
| XS | 0.45 m1′06″ | 0.675 m2′03″ |
| M | 0.675 m2′03″ | 1.125 m3′08″ |
| XL | 1.125 m3′08″ | 1.35 m4′05″ |
| XXL | 1.35 m4′05″ | 1.575 m5′02″ |
| LVL | |||
|---|---|---|---|
| 50 | 520,000 | 304 | 296 |
| 40 | 280,000 | 304 | 10 |
| 35 | 190,000 | 196 | - |
| 30 | 125,000 | 126 | - |
| 25 | 80,000 | 87 | - |
| 20 | 47,500 | 58 | - |
| 15 | 25,500 | 38 | - |
| 10 | 11,000 | 19 | - |
| 5 | 3,000 | 9 | - |
Stardust, Candy and Candy XL to power up Gastrodon (West Sea) from Level 1 to 15, 20, 25, 30, 35, 40 and 50. Maxing it out costs 520,000 Stardust, 304 Candy and 296 Candy XL.
High-resolution Pokémon HOME sprites for Gastrodon (West Sea). Labels are our best match for each sprite. Click one to download it at 512×512.

| Versions | Pokédex entry |
|---|---|
| Diamond | It has a pliable body without any bones. If any part of its body is torn off, it grows right back. |
| Pearl | It apparently had a huge shell for protection in ancient times. It lives in shallow tidal pools. |
| Platinum, Black, White, Black 2, White 2 | Long ago, its entire back was shielded with a sturdy shell. There are traces of it left in its cells. |
| HeartGold, SoulSilver | When its natural enemy attacks, it oozes purple fluid and escapes. |
| X, Omega Ruby | When its natural enemy attacks, it oozes purple fluid and escapes. |
| Y, Alpha Sapphire | It apparently had a huge shell for protection in ancient times. It lives in shallow tidal pools. |
| Sun | It has strong regenerative capabilities. Even if parts of it are bitten off by fish Pokémon, it will return to normal within a few hours. |
| Moon | Plankton, invisible to the naked eye, is its main food source. It comes onto the land periodically, but the reason for this is not known. |
| Ultra Sun | Long ago, it had a shell on its back. There’s now a vestigial plate on its back that’s hard but thin. |
| Ultra Moon | Their shape and color change, depending on their environment and diet. There are many of them at beaches where the waves are calm. |
| Sword | Its search for food sometimes leads it onto land, where it leaves behind a sticky trail of slime as it passes through. |
| Shield | The softness of its body helps disperse the force of impacts, so although its body is uncommonly squishy, it’s also surprisingly resilient. |
| Legends: Arceus | Eats beach sand for nourishment. Should one Gastrodon encounter another of a different color, a fierce battle will inevitably ensue. |
Gastrodon (West Sea)’s best moves are Mud-Slap and Earth Power, for 10.42 DPS and 224.1 TDO.
Values use the default battle settings. Results vary with the opponent and weather.
Water and Ground-type Pokémon are weak to Grass-type moves. They take reduced damage from Electric, Fire, Poison, Rock, and Steel-type moves.
Gastrodon (West Sea) tops out at 2,324 CP at Level 40 and 2,628 CP at Level 50.
Gastrodon (West Sea) can be Shiny in Pokémon GO ✨.
Gastrodon (West Sea) cannot Dynamax in Pokémon GO.
The following Mega Pokémon boost Gastrodon (West Sea): Mega Blastoise, Mega Slowbro, Mega Starmie, Mega Gyarados, Mega Swampert, Mega Sharpedo, Primal Kyogre, Mega Greninja, Mega Steelix, Mega Camerupt, Primal Groudon, and Mega Garchomp.