n large animal aquatic 

Perception +6; electrolocation (imprecise) 30 feet, low-light vision

Skills Athletics +8

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

Electrolocation A stingray in water can use its electrolocation as an imprecise sense at the listed range to detect living creatures that are in the same body of water as itself.

AC  16; Fort +6, Ref +9, Will +6

HP 24

Speed swim 40 feet

Melee [>] tail +8 (agile), Damage 1d8+3 bludgeoning

Swift Swimmer [>>] The manta ray Swims twice. It has a +10-foot circumstance bonus to its Speed during these actions.

Bestiary 2, page 226.