The Mightywide River is one of the three new maps introduced in New Pokémon Snap. This area welcomes seven new Pokémon to the game, including the long-awaited Gyarados. Here is a complete guide to Mightywide River.
Mightywide River alternate path
To access the alternate path of Mightywide River, you first need to take a trip there at night. Along the way, you will see a Feraligatr sleeping on a branch. A few meters later, on your right, several Beautifly are hanging on a wall of plants. Scan this zone to reveal an alternate path leading to a cave behind the plants. The Mightywide River alternate path features various Pokémon, such as Drilbur, Cleffa, and Swampert.
Once you unlock the Mightywide River alternate path on the night course, you can access it during the day. A word of caution: to access the day version of the alternate path, you need to unlock Research Level 3. Before that, you will not be able to see the branching path.

New Pokémon you can find in Mightywide River
Gyarados finally makes its entrance in New Pokémon Snap, as well as six other Pokémon: Cleffa, Psyduck, Feraligatr, Drilbur, Ursaring, and Tropius.
A total of 20 Pokémon live in the Mightywide River during the day:
- Aipom
- Arbok
- Beautifly
- Cleffa
- Drilbur
- Feraligatr
- Grookey
- Gyarados
- Magikarp
- Metapod
- Psyduck
- Quagsire
- Sobble
- Swampert
- Toucannon
- Tropius
- Ursaring
- Venusaur
- Vivillon
- Wooper
If you embark on the Mightywide River at night, you can see 18 Pokémon:
- Aipom
- Ariados
- Beautifly
- Cleffa
- Drilbur
- Feraligatr
- Gyarados
- Ledian
- Magikarp
- Morelull
- Psyduck
- Quagsire
- Swampert
- Toucannon
- Tropius
- Ursaring
- Vivillon
- Wooper
The Mightywide River is a fast-paced map. It will take accuracy to land an Illumina Orb into some of the Crystablooms. Once you took all the snapshots you needed of Gyarados, make sure to visit the two other maps from the latest DLC of New Pokémon Snap: Barren Badlands and Secret Side Path.