pf2e.fyi
From Pathfinder Impossible Magic, which isn't enabled.

Vibration Sense

FEAT 4

Your eidolon gains Tremorsense as an imprecise sense with a range of 30 feet. If aquatic, it gains Wavesense as an imprecise sense with a range of 30 feet instead. If amphibious, it gains both.

Pathfinder Impossible MagicORC