The Coastal Observation and Seabird Survey Team (COASST) is a 20 year old citizen science project housed at the University of Washington and focused on the beach environment of the northeast Pacific. Since our beginning, over 4,000 participants on more than 450 beaches spanning four states have contributed directly to monitoring their local marine resources and ecosystem health.

Far Out: mudflats and more


Far Out: mudflats and more

Every COASSTer has questions about the zones on their beach at some point! This post is the first in our Zones FAQ series. If you’d like to test your skills at identifying beach zones, check

Upcoming Events

Digital Deep Dive: Oil Spills

  • All Regions: Online (Map)
  • Saturday, May 15, 9:30 am10:30 am

Digital Deep Dive: Invasive Green Crabs

  • All Regions: Online (Map)
  • Saturday, June 5, 9:30 am10:30 am

Training: COASSTLite! (SE Alaska)

  • Alaska: Online (Map)
  • Friday, June 25, 12:00 pm3:00 pm