Acorn Barnacle, Balanus glandula

ID made by using list found here www.kingcounty.gov/environment/waterandland/puget-sound-m...

 

and compared to image found here:

www.wallawalla.edu/academics/departments/biology/rosario/...

 

and here:

www.bily.com/pnwsc/web-content/Crustacean%20Identificatio...

Done