This was the best wildlife safari I've taken in my life (outside of Africa and the Galapagos) - and there's no close 2nd! We saw 36 otters (the guides counted), many tens of sea lions and harbor seals and a ton of different bird species from pelicans and cormorants to great blue herons and great white egrets to lots of species of shorebirds and more. We didn't just see these animals in their natural habitat - we were very close, ~5-10 yards from the closer otters. I went with my relatives who've done this tour many times and told me this was typical.
The wildlife was nothing short of spectacular and our guide (a biology / naturalist PHD student, I think) was extremely knowledgeable about the otters and other species. We were also fortunate to have the owner, Joe, as our boat captain and he shared with us the history and quite a bit about the ecosystem. They were both very nice and knowledgeable, with loud clear voices. I'd give this tour 6 stars, if I could!