FREE. Docent-led. Explore the dynamic biodiversity of the Northern California coast. Suggested donation: $5 child, $10 adult, $25 per family. Service dogs only. Fridays. Register for 1 of 3 time slots: 2, 2:30, or 3 p.m. Arrive no earlier than 15 minutes prior to your tour start time. Last tour for season: Aug. 30. Bodega Marine Laboratory. 2099 Westshore Rd., Bodega Bay. Free with a reservations: tinyurl.com/8py7msfy.