On a hot summer’s day, marine ecologist Courtney Greiner walks the shore of a rocky Washington beach at low tide with a handful of staff and interns. They stake out the ground and hunch down, digging up the top two inches of mud, silt, and gravel looking for baby clams.
For thousands of years, the indigenous peoples of the West Coast would build rock walls at the low tide line, allowing sand to pile up behind them, making the slope of the beach gentler, and expanding the area of the intertidal zone that clams like to call home. These simple clam gardens are effective at boosting shellfish numbers, and have long been used to improve food security for traditional peoples.
