2014 Harbor Seal Pupping Season Closures
From March 1 through June 30, the park implements closures of certain Tomales Bay beaches and Drakes Estero to water-based recreation to protect harbor seals during the pupping season. Please avoid disturbing seals to ensure a successful pupping season. More »
2014 Winter Shuttle Bus Operations Have Ended
March 30, 2014, was the last day for the 2014 Winter Shuttle Bus System. Sir Francis Drake Blvd. is open daily from now through late December 2014. More »
Operational Changes Took Effect on May 1, 2013
The Lighthouse Visitor Center is now only open Fridays through Mondays; closed Tuesdays through Thursdays, including Thanksgiving. The Kenneth C. Patrick Visitor Center is open on weekends and holidays when shuttles are operating. More »
Lightscape / Night Sky
Pollution of dark night skies with artificial light is a problem in much of the world. We have only begun to explore its ecological effects, such as impacts on migrating birds, turtles, and other species, as well as possible impacts on predator processes and plant dynamics whose phenology depends on day length.
National parks represent some of the last opportunities to protect nighttime darkness. We can often identify specific sources of light pollution outside of park boundaries, and work with our neighbors to modify them. We also need to identify sources of light pollution generated by the National Park Service within parks and take steps to ensure that our lighting systems in parking lots, maintenance yards, and other facilities are properly designed.
Did You Know?
In addition to raising sea levels and temperatures, the increased concentration of carbon dioxide in the atmosphere is changing ocean chemistry by reducing the pH of the ocean. This decreased pH reduces the availability of minerals which marine organisms use to build shells and reef structures. More...