While most trainers evolve Mareanie into Toxapex immediately, the unevolved form has a niche with Eviolite boosting its defenses. Only weak to Electric, Ground, and Psychic. Known as the Brutal Star Pokemon. Can go either physical or special depending on the set.
Mareanie's stats barely vary. 0 sit in respectable range with no real gaps. It's a blank slate for EV investment. Worth 1 Defense EV, medium-fast 1M XP curve to max.
This Pokémon wanders the seaside looking for food. It often gets electric shocks from broken Pincurchin spines that it tries to eat.
It has excellent regenerative capabilities. Legs that a Mareanie has lost have a very bitter, astringent flavor—they’re not suitable as food.
Mareanie Weakness
GoodMareanie's Poison/Water typing leaves it vulnerable to Electric, Ground, and Psychic moves. 8 resistances give it solid defensive coverage on top of that.
Mareanie evolves into Toxapex. It's a two-stage chain with the method shown below. Plenty of partners for breeding via one egg group. Eggs are average hatch time. The evolved forms gain up to 190 total stats over Mareanie.
How to Evolve
Breed Mareanie easily with 84 breeding partners from the Water1 egg group. Pass egg moves like Haze, Infestation, Spit Up and 2 more to offspring.
Eviolite makes Mareanie bulkier than you'd expect from something that still evolves. Max Sp. Atk without Speed EVs with Modest nature handle the stat profile. The remaining moves keeps it from being passive. Recover patches up chip damage.
Best Build
Best Mareanie Moveset
- Recover
- Sludge Bomb
- Ice Beam
- Surf
Recommended Teammates
You'll want to breed for Haze and Infestation on Mareanie. These egg moves aren't just nice to have. Combined with STAB from Gunk Shot and Hydro Pump, they expand what Mareanie can actually threaten in practice.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Easy grab on Mareanie with high spawn rates across 12 locations in mid-game routes. The sorted list below shows the full spread so you can pick the most convenient spot.
Best Locations
Which version you're playing matters for Mareanie. 12 walking spots at Lv. 16-42 spread across Scarlet and Violet, and some routes only appear in one cartridge. Check the version badges below.
Mareanie isn't fully evolved, so it's not built for competitive play. You'll want to evolve it into Toxapex to unlock its full potential. At 305 BST, it's a stepping stone rather than a team anchor.
Mareanie evolves into Toxapex at level 38. Mareanie is the base form of this evolutionary line.
Run Regenerator on Mareanie. It's the ability that defines how you build around it and the main reason it holds a competitive niche. Mareanie also gets Merciless and Limber, but they don't compare.
Mareanie fills the support role. It's leaning toward the physical side (base 53 Attack). Base 45 Speed is low. Priority moves or Trick Room are the way to go. And it's fragile — can't afford to take many hits.
Mareanie can be found in Scarlet & Violet, Sword & Shield, Sun & Moon, and Ultra Sun & Ultra Moon.
Introduced in Sun & Moon, Mareanie has appeared in 4 games across 3 generations. Later debuts mean fewer total appearances, but it's been a consistent presence since its introduction.
- Gen IY
Yellow - Gen IRB

Red & Blue - Gen IIGS

Gold & Silver - Gen IIC
Crystal - Gen IIIRS

Ruby & Sapphire - Gen IIIFRLG

FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS

HeartGold & SoulSilver - Gen IVDP

Diamond & Pearl - Gen VBW

Black & White - Gen VB2W2

Black 2 & White 2 - Gen VIXY

X & Y - Gen VIORAS

Omega Ruby & Alpha Sapphire - Gen VIIUSUM

Ultra Sun & Ultra Moon - Gen VIISMDebut

Sun & Moon - Gen VIILGPE

Let's Go Pikachu & Eevee - Gen VIIISwSh

Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP

Brilliant Diamond & Shining Pearl - Gen IXSV

Scarlet & Violet - Gen IXLZA
Legends: Z-A
