littleneck

Over the years sand should filter through its holes and extend the shallow, gently sloping habitat favorable to native littleneck clams.

Barber led a study of four decades of data that revealed the native littleneck clam population has been declining, while butter clams had gradually increased but were more recently beginning to decline.

Many different clams can be harvested, such as the Manila, butter and littleneck clams.

In just a few decades, the garden could be home to many native butter and littleneck clams.

Clam gardens grow four times more butter clams and twice as many littleneck clams as unterraced beaches do, according to a study of dozens of ancient clam gardens around Quadra Island, British Columbia.