The Central California coast has long been celebrated for its dramatic cliffs, flourishing kelp forests, and abundant marine life. Now, it holds a new, historic title. Designated by NOAA on October 11, 2024, the Chumash Heritage National Marine Sanctuary is America's 17th national marine sanctuary. Notably, it is the very first marine sanctuary in the United States successfully nominated by an Indigenous group.
If you are planning a trip to the Central Coast, here is everything you need to know about visiting, exploring, and respecting this extraordinary "underwater national park".
What is the Chumash Heritage National Marine Sanctuary?
Spanning an impressive 4,543 square miles of ocean, the sanctuary stretches along 116 miles of coastline from San Luis Obispo County (just south of the Diablo Canyon Power Plant) down to Naples Reef on the Gaviota Coast in Santa Barbara County. It extends up to 60 miles offshore and reaches depths of over 11,500 feet.
This protected seascape was championed by the Northern Chumash Tribal Council and honors the deep cultural, historical, and spiritual connections the Chumash and Salinan peoples have to these waters. During the last Ice Age, what is now the ocean floor was dry land; as a result, the sanctuary's waters protect submerged ancestral lands and ancient village sites that date back over 10,000 years.
A Biodiversity Hotspot
Often likened to a marine Serengeti, the sanctuary sits at a dynamic ecological transition zone where cool northern currents meet warmer southern waters. This convergence creates incredibly rich marine habitats. Visitors have the chance to witness an array of wildlife, including:
- Marine Mammals: Southern sea otters playing in kelp forests, harbor seals, sea lions, and migrating blue and humpback whales.
- Endangered Species: The sanctuary offers critical habitat for vulnerable species like leatherback sea turtles, black abalone, and snowy plovers.
- Deep-Sea Wonders: Offshore geologic features like the Rodriguez Seamount and Santa Lucia Bank are home to vibrant deep-sea coral gardens and sponges.
Tips for Visiting and Exploring
You don't need a submarine to experience the sanctuary; its beauty is easily accessible from the shore and surface!
- Kayaking and Paddleboarding: Renting a kayak in Avila Beach is one of the best ways to get up close to the sanctuary's nearshore marine life. Paddling through the calm waters of San Luis Obispo Bay, you might easily spot curious harbor seals, sea otters, and coastal birds like cormorants.
- Hiking Coastal Trails: Many protected land areas overlook the sanctuary, offering panoramic ocean views and excellent whale-watching vantage points. Try the 2.8-mile Ontario Ridge Loop Trail near Avila Beach, or explore the 11 miles of scenic trails at the Pismo Preserve.
- Tidepooling and Surfing: Classic Central Coast activities like surfing, sport fishing, and tidepooling are completely encouraged, now with an added focus on environmental stewardship.
- Shipwreck Diving: For experienced divers, the region is home to over 200 documented shipwrecks, including the historic Gold Rush-era steamship Yankee Blade.
Rules and Respect: Know Before You Go
When you visit the Chumash Heritage National Marine Sanctuary, you are stepping into a living, protected environment that is culturally sacred.
- Observe Wildlife from a Distance: Always give marine mammals and sea birds plenty of space to avoid disturbing their natural behaviors and habitats.
- Respect Sacred Sites: The sanctuary includes spiritually significant areas like Point Conception (known to the Chumash as Humqaq, the Western Gate). Treat the entire coastal ecosystem with the reverence it deserves.
- New Protections: Sanctuary regulations prohibit harmful activities like new oil drilling, seabed mining, and the discharge of untreated vessel sewage to ensure the waters remain pristine.
Experiencing this newly designated sanctuary is a chance to connect with thousands of years of coastal heritage and witness some of the most vibrant marine ecosystems on the planet. Keep these tips in mind, tread lightly, and enjoy the beautiful Central Coast!






