Sand lances school in many bays and inlets in the inside waters.
Minke whales, other marine mammals, and many species of seabirds also prey on sand lance. Spawning Beaches 140 miles of sand lance spawning beaches are known to exist along Puget Sound. The beach spawning habits of sand lance were not known in Puget Sound prior to 1989. Many potential sand lance spawning areas remain to be surveyed. Sand lance spawn is almost invisible on beaches.