From Pathfinder Society Quest #3: Grehunde's Gorget, which isn't enabled.

Adolescent Sea Serpent

CREATURE 3

UNCOMMON SMALL ANIMAL

Perception +9; darkvision

Skills Acrobatics +7, Athletics +8 (+10 to swim), Stealth +10

Str +5, Dex +1, Con +3, Int -4, Wis +1, Cha +0

AC 18; Fort +10, Ref +5, Will +5

HP 44

Speed 20 feet, swim 40 feet

Melee Jaws +12 (reach 10, unarmed), Damage 1d8+6 piercing

Ranged Waterspout +10 (brutal, water, range increment 30 feet), Damage plus Adolescent Sea Serpent Algae

Adolescent Sea Serpent Algae (incapacitation, poison)

The water in the ballast organs around the sea serpent's neck is full of psychotropic algae.

Saving throw DC 20 Fortitude

Maximum duration 3 rounds

Stage 1 Confused and, if flying, spends its first action each turn to descend 20 feet (1 round)

Constrict

1d4+6 bludgeoning damage, no listed Fortitude save

The monster deals the listed amount of damage to any number of creatures Grabbed or Restrained by it. Each of those creatures can attempt a basic Fortitude save with the listed DC.

Spine Rake (attack, move)

The young sea serpent extends the spines along its back and Swims or Strides. Each creature the serpent is adjacent to at any point during its movement takes 1d8+4 slashing damage (DC 17 basic Reflex save).

Pathfinder Society Quest #3: Grehunde's GorgetOGL