This boat tour was one of the best things we did on our trip to Monterey, more interesting, even, than the well known aquarium. We saw over a dozen sea otters, and many species of shore birds. The guide on our boat was extremely knowledgeable about the animals, ecology and history of the slough. Bring a pair of binoculars. My go-to binocs for most uses are the clear, sharp, pocketable, and reasonably priced Nikon Travelite 8X25s, which I have been using for decades. The twin-hull open boat was very quiet, and the ride smooth. The staff were helpful and responsive. We did have some trouble finding where to park and board the boat, after asking a number of different businesses and receiving conflicting information. Clearer signs and information about the location, where to park and board the boat would be helpful. I highly recommend this tour.