Feat: Tandem Movement
You and your eidolon move together. You each use a single action to Stride. Either of you that has the corresponding movement type can Burrow, Climb, Fly, or Swim instead.
Pathfinder 2e Database
You and your eidolon move together. You each use a single action to Stride. Either of you that has the corresponding movement type can Burrow, Climb, Fly, or Swim instead.