A brine dragon can use their hearing as a precise sense at the listed range, but only underwater.
AC 32; Fort +25, Ref +22, Will +20; +2 status to all saves vs. primal
HP 270; Immunities paralyzed, sleep, clumsy, controlled; Resistances acid 10, force 10
+2 Status to All Saves Vs. Primal
+2 to Sense Motive
Regent's Glower(emotion, fear, mental, primal)
Trigger The dragon is critically hit with a melee attack
Effect The dragon focuses their weighty gaze upon their assailant, filling their foe with dread. The triggering creature takes 6d6 mental damage with a DC 29 basic Will save. Any creature who fails the save also becomes Frightened 1 (Frightened 2 on a critical failure).
Effect The dragon uses Pressurized Pool three times. None of the bursts can overlap.
Benthic Bite(primal)
A creature who takes damage from a brine dragon's jaws Strike must succeed at a DC 29 Fortitude save or be Enfeebled 2 for 1 round.
Crushing Breath(primal)
The dragon spews a 80-foot line of pressurized water that deals 13d6 bludgeoning damage with a DC 32 basic Reflex save. A creature that fails the save is also Clumsy 1 (Clumsy 2 on a critical failure) for 1 minute. The dragon can't use Crushing Breath again for 1d4 rounds.
Draconic Frenzy
The dragon makes two claw Strikes and one tail Strike in any order.
Draconic Momentum
When the dragon scores a critical hit with a Strike, they recharge Crushing Breath.
Pressurized Pool(primal)
The dragon expels a 10-foot burst of pressurized water within 120 feet that lasts for 1 minute. A creature other than a brine dragon that enters or begins their turn within a burst must succeed at a DC 32 Fortitude save or become Encumbered until the beginning of their next turn.
Tidal Surge(primal)
The dragon sweeps their wings, creating a 30-foot cone of buffeting water that deals 8d8 bludgeoning damage with a DC 32 basic Fortitude save. Each unattended object and each creature that fails the save is also pushed away from the dragon 10 feet (20 feet on a critical failure) and is knocked Prone. The dragon can't use Tidal Surge again for 1d4 rounds.