Mariner's Fire Feat 1
Source Pathfinder Lost Omens: Ancestry Guide
You conjure uncanny orbs of spiritual flame that float above or below the water's surface. You can cast the Produce Flame cantrip as a primal innate spell at will, heightened to a spell level equal to half your level rounded up. You can cast this cantrip underwater.
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.
TenguA creature with this trait is a member of the tengu ancestry. Tengus are humanoids who resemble birds. An ability with this trait can be used or selected only by tengus. An item with this trait is created and used by tengus.