Young Sea SerpentCreature 1
Source Pathfinder Society Quest #3: Grehunde's Gorget
Perception +7 (darkvision)
Languages none
Skills Acrobatics +4, Athletics +6, Stealth +8
Str +5, Dex +1, Con +3, Int -4, Wis +1, Cha +0
AC 16; Fort +10; Reflex +5; Will +5;
HP 20
Speed 20 feet (swim 40 feet)
Jaws
+9 (+4, -1) to hit (reach 10, unarmed) 1d6+2 PiercingConstrict

(1d4+2) 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 (1d4+2) slashing damage (DC 14 reflex save).
Young 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 18 fortitude
Maximum duration 3 rounds
Stage 1 Confused and, if flying, spends its first action each turn to descend 20 feet (1 round)
Grab
Requirements The monster's last action was a successful Strike that lists Grab in its damage entry, or the monster has a creature Grabbed or Restrained
Effect If used after a Strike, the monster attempts to [/act grapple] the creature using the body part it attacked with. This attempt neither applies nor counts toward the creature's multiple attack penalty.
The monster can instead use Grab and choose one creature it's grabbing or restraining with an appendage that has Grab to automatically extend that condition to the end of the monster's next turn.
Traits
Something of uncommon rarity requires special training or comes from a particular culture or part of the world. Some character choices give access to uncommon options, and the GM can choose to allow access for anyone. Less is known about uncommon creatures than common creatures. They typically can't be summoned. The DC of Recall Knowledge checks related to these creature is increased by 2.
AnimalAn animal is a creature with a relatively low intelligence. It typically doesn't have an Intelligence attribute modifier over –4, can't speak languages, and can't be trained in Intelligence-based skills.