You can change your wings to instead be effective underwater.
Prerequisite(s): Gathlain, racial fly speed.
Benefit(s): Once per day as a full-round action, you can lose your fly speed to gain a swim speed of 30 feet as you reconfigure your symbiotic vines to help you move underwater. This effect lasts for 1 hour, or until you end it as a full-round action.
Pathfinder Player Companion: Legacy of the First World © 2017, Paizo Inc.; Authors: Jake Alley, Judy Bauer, John Compton, Mikko Kallio, Jason Keeley, Joe Pasini, Mark Seifter, Kendra Leigh Speedling, Josh Vogt, and Linda Zayas-Palmer.