n medium aquatic elemental water 

Perception +8; darkvision

Skills Athletics +10, Stealth +11, Survival +8

Str +3 Dex +2 Con +2 Int -4 Wis +1 Cha +0

AC  19; Fort +9, Ref +11, Will +6

HP 45; Immunities bleed, poison, paralyzed, sleep; Resistances fire 5

Speed 15 feet, swim 50 feet

Melee [>] jaws +11, Damage 1d12+7 piercing plus Grab

Deep Plunge [>] The brine shark dives straight down into the water, moving up to twice its swim Speed in a straight vertical line. It can use this ability while grabbing a creature.

Bestiary, page 152. Expanded in LOIL.