Threespine Shrimp
(Heptacarpus tridens)

image of a Threespine Shrimp

Image ID: 159-00

Other shots:  image of a Threespine Shrimp
Comments : Not entirely sure about the ID, but I saw a lot of them, and "Pacific Coast Crabs and Shrimp" by Gregory C. Jensen claims that they are extremely common in Puget Sound. Good enough for me!
Common name : Threespine Shrimp
Scientific Name : Heptacarpus tridens
Location Found : KVI Tower Reef, Central Puget Sound
Actual Size : 1.5 inches
Camera Used : Canon D30 digital in Ikelite Housing
Natural History :