Razor Clam Update

RECREATIONAL RAZOR CLAM OPENER: Copalis Beach has been added to the previously announced tentative April razor clam opener. We appreciate your patience as we conducted one additional set of marine toxin tests to ensure the clams are safe to eat. The results are expected no later than April 16. The results of the first round of required testing are below. The specific details of the tentative upcoming opener are:

  • April 19, Thursday, 9:46 a.m.; -0.9 feet; Mocrocks
  • April 20, Friday, 10:37 a.m.; -0.7 feet; Mocrocks
  • April 21, Saturday, 11:34 a.m.; -0.4 feet; Copalis, Long Beach, Twin Harbors, Mocrocks (digging hours will be extended to 1 p.m.)
  • April 22, Sunday, 12:38 p.m.; -0.1 feet; Long Beach, Twin Harbors, Mocrocks (digging hours will be extended to 2 p.m.)

More information can be found at: http://wdfw.wa.gov/fishing/shellfish/razorclams/current.html



Listed below are the most recent marine toxin levels, as announced by the Washington Department of Health (WDOH) on April 6, 2018. This was an unusual third round of razor clam samples requested by WDOH before this recreational razor clam opener, because there were other indications that a marine toxin bloom could occur. However, these samples are all below the action level for domoic acid, Paralytic Shellfish Poison (PSP) and Diarrhetic Shellfish Poison (DSP). Note that NTD means nothing to detect.


Recall, before a beach can be opened for the harvest of razor clams, WDOH protocol requires that all razor clam samples collected from that beach must test under the action level (20 ppm for domoic acid; 80 µg/100g for PSP; and 16 µg/100g for DSP) on both of the two required sample collections.


Note that in all of these samples; only razor clam meat tissue is tested.


These samples were all collected on 4/03/18.


Long Beach Area E (north):

  • domoic acid = 4 ppm
  • PSP = <38 µg/100g
  • DSP = NTD


Twin Harbors Area CL (middle):

  • domoic acid = 4 ppm
  • PSP = NTD
  • DSP = NTD


Copalis Area XL (middle)

  • domoic acid = 5 ppm
  • PSP = NTD
  • DSP = 1 µg/100g


Mocrocks Area CP (middle)

  • domoic acid = 5 ppm
  • PSP = <38 µg/100g
  • DSP = NTD



For more information on razor clams, including how seasons are set, population sampling techniques and how to dig, clean and cook razor clams please see the following link:



See our video on how to dig razor clams at: https://youtu.be/RBM9b5r6rMQ


Or our video on how to dig legally with your kids at: https://youtu.be/gl9p_PparVk


And our video on how we determine how many razor clams are on each beach at: https://youtu.be/aC4fu6_8G8I


For more information on marine toxins and other harmful algal blooms, see the following links:


Dan L. Ayres   |   Coastal Shellfish Manager  

Washington Department of Fish and Wildlife   |   Region Six

48 Devonshire Road   |   Montesano, WA 98563   |   USA

Office: (360) 249-4628 (ext. 209)   |   Mobile: (360) 470-3557

FAX: (360) 249-1229   |   WDFW Radio Call Sign W-758