The Pacific white-sided dolphin is particularly lively and is often identified by its splashes which can be seen long before the animal itself is seen. The 1996 population of Pacific white-sided dolphins on the West coast of the United States is estimated at 121,693. These and other oceanic dolphins are the cetaceans most likely sighted due to their relatively large populations.

Brief Description:

• Color: Black or dark gray upper side with a white underside, as well as bicolored fin and flippers.

• Dorsal: Low, stubby dorsal fin with a broad base.

• Body: Fairly robust body in front of dorsal fin, a barely discernible black beak and a dark ring around eyes.

• Habitat: Found mainly offshore in rich upwelling waters. This species seems to prefer deeper water.

Feeding, behavior and interesting facts:

The Pacific white-sided dolphin feeds on fish, squid and octopus.

The Pacific white-sided dolphin is extremely inquisitive and appears near boats to ride the bow wakes. They are very active and demonstrate this behavior by frequently breaching and even spinning in midair landing on their side or belly.

When swimming extremely fast, the Pacific white-sided dolphin leaves the water to breathe and often produces a spray of water known as a "rooster tail", a spray similar to that of the Dall's porpoise.