Smalma, thanks for the great information. You mentioned that River and Pacific lamprey declined dramatically the last couple decades. That is what I see both on rivers with dams and on the coast. I have no explanation of why they declined.

It might be seals are predating more heavily since they do eat lamprey and the decline in lamprey generally conicides with more seals. It also seems seals are an easy scapegoat when in fact they get blamed for many things they don't do.

The juvenile lamprey washed out in the flood says slides and watershed instability might be a problem. It could be a bunch of other habitat things.

Smalma do you or anyone else have an explanation or thoughts on why lamprey declined dramatically?