British Columbia
http://www.pac.dfo-mpo.gc.ca/fm-gp/rec/tidal-maree/index-eng.htm
Washington
http://wdfw.wa.gov/
Oregon
http://www.dfw.state.or.us/resources/fishing/
California
https://www.wildlife.ca.gov/Fishing
Alaska
http://www.sf.adfg.state.ak.us/Static/Statewide/regulations/southeast/SEshellfish.pdf