n huge animal 

Perception +12; aquatic echolocation 120 feet, low-light vision

Skills Athletics +14, Stealth +13

Str +7 Dex +2 Con +5 Int -4 Wis +3 Cha +0

Aquatic Echolocation An orca can use its hearing as a precise sense at the listed range, but only underwater.

Deep Breath An orca can hold its breath for 2 hours.

AC  21; Fort +14, Ref +11, Will +12

HP 75

Speed swim 60 feet

Melee [>] jaws +13, Damage 2d8+9 piercing plus Grab

Aquatic Ambush [>] 30 feet. An orca can travel no further than 5 feet onto land as part of an Aquatic Ambush. After it does so, it is prone until it Crawls to return to the water.

Breach [>>] The orca Swims up to its swim Speed, then Leaps vertically out of the water up to 25 feet in the air, making a Strike against a creature at any point during the jump (this lets it attack a creature within 30 feet of the water's surface). After the Strike, the orca splashes back down into the water.

Bestiary 2, page 84.