Phyllospadix scouleri, or Scouler's surfgrass, is a flowering marine plant in the family Zosteraceae.

It is native to the coastline of western North America from the Alaskan panhandle to Baja California.

The pollen is spread by water movement which can occur underwater, but most pollination takes place on the surface of the sea at very low tides.

A biodiverse invertebrate community lives in surf grass beds and includes snails, limpets and crustaceans, and algae may grow on the stems and leaves.

[3] Sea grass was used by Native American tribes along the Southern California Coast to make cordage and other woven objects, including specimens from San Miguel Island dated between about 10,000 and 8,600 years ago (see Connolly, Erlandson, and Norris 1992).