Isle of Armor Diglett locations: Loop Lagoon
Loop Lagoon is spread across two beaches and an island, and there are seven Diglett to find in total.
As you leave Courageous Cavern, check the bushes on the left for the first Diglett.
The second is a little further along, next to the ocean.
Then the third is at the other end of the same beach.
Hop on your bike to the central island, then follow the path up to the berry tree at the top. There's a Diglett next to it.
Turn around and go to the other side of the island, where you'll find this one on the side of the path.
The final two are right next to each other. Cycle to the other, secluded beach and this one is against the wall at the back.
And this one is right next to the ocean.