Pokémon Let's Go Seafoam Islands and How to Find Articuno - Available Pokémon, Items and Trainers

Seafoam Islands and finding out its tricky push puzzle solutions, as well as your reward of Articuno, are your next objectives, following on from Route 20 east in your quest through Pokémon Let's Go's main story.

Below, we'll cover any and all of the obtainable Pokémon, item locations, trainers and their squads that you might encounter in the area, as well as walking you through any key steps of the story along the way.

We've also opted to break out walkthrough pages down into sections, referring to each of your visits to a given location, seeing as you often backtrack or revisit various places in your quest to become Champion! Where applicable, we'll split our page into one section for each visit, and of course if there are any, clearly mark any spoilers, too!

For more like this, be it specific systems explainers or walkthrough pages on more locations, head back to our main Pokémon Let's Go walkthrough and guide hub.

On this page:

Pokémon Let's Go: how to get through Seafoam Islands

The Seafoam Islands cave is probably the most complex dungeon you'll have enountered so far in Pokémon Let's Go, and in fact it's one of the most complex in the game in general - but don't let that put you off! There are some wonderful Pokémon to catch here, as well as the legendary Articuno that we explain how to reach in the section down below.

In this first section we'll give you a quick cheat sheet for the fastest route through the dungeon and out the other side. In the sections below, we'll map out the cave's various levels one by one, including where each and every ladder goes, and walk you through them from start to finish, as well as, of course, noting all the available items, Pokémon, and trainers you can find along the way.

A couple notes as you head inside: There's a woman on the left of the entrance to Seafoam Islands who'll heal your Pokémon for free, which is nice! You might want to pack some Repels to clear all the wild Pokémon that get in the way.

Note that the below is the fastest route, but you'll miss several items along the way, as well as the entirety of B4F, meaning you'll also miss out on Articuno! Head to the bottom section on this page (there are shortcuts in the contents above) to see how to catch Articuno and clear B4F along the way.

Push puzzle solutions and the fastest way through Seafoam Islands

  1. Enter 1F and push the first stone, found to the right, down the nearby hole.
  2. Drop down the hole you pushed it into, down next to it onto B1F, and push it into the next hole nearby there.
  3. Drop into that hole too, taking you down to B2F, and push it into the nearby hole once more. Don't drop in after it this time.
  4. Instead, once you've pushed it down the hole, go left over to the ladder we've marked as B2F-A, which takes you up to B1F again.
  5. From B1F, take the nearby ladder, marked B1F-A, up to 1F entrance level again.
  6. Back on the entrance, go over to the top-right hand side now and push the boulder there down the nearby hole. Go down the ladder 1F-B after it, to B1F.
  7. There on B1F, push the dropped stone down the nearby hole. Drop in after it, to B2F
  8. Push it down the nearby hole on B2F, and follow it again down to B3F - you'll land in the water.
  9. If you've done this correctly, there'll be two boulders in the water just above you - the two you've been pushing down the holes from the entrance level 1F. This stops the fast-flowing water that would normally whisk you away, allowing you to surf normally.
  10. Surf to the right and go back onto land, and take the bottom-right corner ladder, B3F-D up to B2F.
  11. Take the nearby ladder there, B2F-D, up again, to B1F.
  12. Take the nearby ladder there, B1F-G, up one last time to top level 1F.
  13. There, you'll be in the bottom right corner of 1F, and just downwards in the lower wall is the exit!

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Seafoam Islands Entrance: 1F ladders, Pokémon, items and trainers

The entrance level, which we'll call 1F, is one of five in Seafoam Islands, gradually descending to the lowest level, B4F. It also has another man who'll give you more Poké Balls up ramp and on the right, which is worth bearing in mind.

Remember your goal is to push the movable stones into the nearby holes in order to progress throughout the dungeon. The first one on the entrance level is simple. The second, over on the right, requires you to push it downwards first before then pushing it across and back upwards into the hole.

1F Entrance ladders

ImageLadder LabelUp or DownLocationDestination
1F-ADownUpper left, by Coach Trainer, up the ramp from the Route 20 east entranceB1F-A
1F-BDownTop right ladder downwardsB1F-B
1F-CDownBottom right walled off area, by the Route 20 west exit!B1F-D

Available Pokémon

PokémonNotes
ZubatCave
GolbatCave
JinxCave
SeelCave
DewgongCave
SlowpokeCave
SlowbroCave
SquirtleCatch Combo

Available Items

ItemLocation
Ice HealStraight ahead on a ledge
5x Rare CandiesCoach Trainer Yas
Heart ScaleHidden, in pointy rock in bottom right of entrance area
Escape RopeUp ramp and on the right

Trainers and Battles

Trainer NamePokémonLevel
Coach Trainer YasJolteon
Flareon
Vaporeon
46
47
46

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Marcus Vance

Marcus Vance

Cybersecurity & Digital Privacy Researcher

Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.