From Pathfinder Lost Omens Impossible Lands, which isn't enabled.

Water Nagaji

FEAT 1

Much like a water naga, you've formed a connection to a sacred or pristine body of water, either as a home or a place to protect. You gain the Breath Control general feat as a bonus feat and a swim Speed of 10 feet.

Pathfinder Lost Omens Impossible LandsOGL