Exploring Nature in the San Francisco Bay Area

Marsh Gumplant

Defining the edge of a shifting body of water like San Francisco Bay, whose exact extent changes with every tide, every season, every storm, can be tricky business. In our region the regulators sometimes fall back on a botanical criterion. … Read more

Sears Point

The southernmost hump of the Sears Point ridge, known locally as Cougar Mountain, looms over Highway 37. Not its height but its isolated station makes it visible from highways and byways all over the North Bay. Now its windswept slopes … Read more

Islands in a Sea of Grass

The East Bay hills are dotted with hundreds of ponds, many of which offer welcome habitat and shelter to native wildlife, from threatened California red-legged frogs and tiger salamanders to toxic newts, voracious water bugs, and migrating waterfowl. Just about any pond, from a verdant clear blue pool to the merest muddy puddle, has something interesting going on beneath the surface. But perhaps the most remarkable fact about these ponds is that nearly all of them were created as watering holes for livestock. Today, the East Bay Regional Park District is working to understand the complex relationships between native species, grazing cattle, and artificial ponds.

Carquinez Breakthrough

The open hills along the Carquinez Strait are home to working ranches and open space preserves that are meeting places for native species from both the coast and the Central Valley. Today's quiet pastoral landscape makes it hard to envision the violent formative flood that may have cut this critical waterway between the Bay and the Central Valley some half a million years ago.

Betting on Point Molate

With stunning views of the Bay and Marin, Richmond’s Point Molate has seen a lot of changes: It’s been a shrimp camp, a huge winery, and a Navy fuel depot. Now the site of a controversial casino proposal, this modest point of land is home to diverse wildlife and some of the East Bay’s last native coastal prairie.