Swimmer's Guidance Feat 1
Source Pathfinder Howl of the Wild
You're always ready to help those floundering in the water. Any ally who starts their turn within 30 feet of you and in the same body of water gains a 10-foot swim Speed until the end of their turn. If any ally affected by Swimmer's Guidance rolls a critical failure on an Athletics check to Swim, they get a failure instead.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
MerfolkThese aquatic humanoids have an upper body similar to a human and a lower body similar to a fish.