- Semiahmoo Spit is a spit that protrudes from the westernmost expanse of shore on Semiahmoo Peninsula between Semiahmoo Bay and Drayton Harbor off the coast of Blaine in Whatcom County, Washington state. The spit is home to Semiahmoo Park.
- Laurentide Ice Sheet (Wikipedia)
The Laurentide Ice Sheet was a massive sheet of ice that covered millions of square miles, including most of Canada and a large portion of the Northern United States, multiple times during the Quaternary glacial epochs, from 2.58 million years ago to the present.