n medium animal 

Perception +7; aquatic echolocation 120 feet, low-light vision

Skills Athletics +6

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

Aquatic Echolocation A bottlenose dolphin can use its hearing as a precise sense at the listed range, but only underwater.

Deep Breath A bottlenose dolphin can hold its breath for 2 hours.

AC  15; Fort +6, Ref +7, Will +5

HP 16

Speed swim 60 feet

Melee [>] snout +6, Damage 1d6+2 bludgeoning

Melee [>] jaws +6, Damage 1d6+2 piercing

Ramming Speed [>>] The bottlenose dolphin Swims twice and then makes a snout Strike. As long as it moved at least 20 feet, it gains a +1 circumstance bonus to its attack roll. A Large or smaller creature hit by this attack must succeed at a DC 16 Fortitude save or be slowed 1 for 1 round.

Bestiary 2, page 84.