Have you ever walked through the 300 feet of crystal clear acrylic tunnels at the Aquarium of the Bay, with sharks, rays, octopi, jellies and thousands of other bay natives swimming around you? If so, you know it's an experience that never gets old. If not, it's a must-see at Fisherman's Wharf. A non-profit marine nature center, it creates experiences that inspire conservation of the San Francisco Bay and its watershed. The aquarium is an affiliate of the Bay Institute, another nonprofit that has successfully developed and led research, science, education and advocacy programs to revitalize San Francisco Bay's imperiled ecosystems for nearly 30 years. Check it out at: www.aquariumofthebay.org/