From Pathfinder Lost Omens Character Guide, which isn't enabled.

Wavetouched Paragon

FEAT 5

Prerequisites Bonuwat ethnicity

You have been blessed by the sea, granting you the ability to swim like a fish. You gain a 15-foot swim Speed.

Special If you have the Bonuwat Wavetouched background, you can take this feat at 1st level instead of 5th.

Pathfinder Lost Omens Character GuideOGL