I really enjoy the Harbor Porpoise and was lucky enough to work with one in an aquarium.  They are cute little porpoises.  Puffing Pig is the "nickname" because of the loud sound they make when blowing or breathing.  There favorite food is herring and because of that is also known as herring hogs. They will also eat squid, octopus and other small fish.  Harbor Porpoises are found in both North Pacific and North Atlantic Oceans, they prefer the shallow water of bays and harbors.  They are commonly seen all over the Puget Sound.  They are shy and usually avoid boats, probly because of the frequent unpleasant encounters with humans.   They travel alone or in groups of 5-10 individuals.

 

Also known as the spray porpoise for the rooster tail spray it has when surfacing, the Dalls Porpoise is the fastest cetacean in the ocean at speeds of over 35mph.  Dalls Porpoise are often seen swimming with Killer Whales and often bow ride with boats.  They travel in small groups of 10-20 but as many as 200 have been seen in feeding areas.  They eat a wide variety of fish, and love squid.  Like the Harbor Porpoise they will eat what is available.  Dalls Porpoise seem to be isolated to waters less the 60 degrees fahrenheit. They are commonly seen throughout the San Juan Islands and Puget Sound.

 

Dalls Porpoise are all black except the back of the dorsal fin, sides, and the edge of the flukes are white.  The have 20-24 teeth.  They are stocky with short pectorial fins and a small rounded dorsal fin.  

 

Dalls Porpoises threats are pollution, humans and Killer Whales.