you get it today? ten years ago, we wouldn t see anything like this. reporter: what he sees is backed up by a recent scientific study. the salmon sandwich. reporter: the salmon he gets from alaska are shrinking as much as 8%. why? scientists point to salmon returning to fresh water at a younger age from a hotter ocean. on the east coast it is clams. climate change has devastated the shell fish industry in maine. reporter: he leads the maine clammers association. in 1976 when it was still cold we harvested between 35,000,040 million pounds of soft shell clams a year and last year we were under 7 million. reporter: whether in maine or here in washington state the problem is the same. warming waters. that is impacting the foods you love to eat. seattle is synonymous with salmon but here in this area this biologist says fewer salmon come back to spawn. we attribute that to climate change.