Fishing for a Reason

46: How Razor Clams Reproduce, Grow & Survive: Science Every Clammer Should Know

Jamie Propst Season 1 Episode 46

In this deep-dive episode of Fishing for a Reason, Jamie breaks down the entire Pacific Razor Clam lifecycle — from microscopic larvae drifting in the surf to the full-grown clams you dig up on Washington’s beaches. If you love the science behind our local fisheries, this is your episode.

Jamie explains how clams dig at surprising speeds, how spawning actually works, why millions of eggs are produced with almost no chance of survival, and how state biologists assess razor clam populations to keep our recreational fishery thriving.

You’ll also learn the real story behind domoic acid, what makes a clam “safe,” and why tentative dig dates exist. Whether you’re a seasoned digger or planning your first trip, this episode gives you the biological insights to appreciate every clam you pull from the sand.

What Listeners Will Learn

  • How fast razor clams can actually dig 
  • Their full lifecycle — spawning, larvae development, settlement, and maturity
  • Why females release up to 118 million eggs and why most don’t survive
  • The predators razor clams face at every stage
  • What domoic acid is and why it doesn’t affect the clams
  • How WDFW tests clams for toxins & chooses safe dig dates
  • How state biologists perform annual stock assessments
  • Why honoring size-blind limits is critical for population health
  • The surprising economic impact razor clam digs have on local communities

Resources Mentioned