https://www.mercurynews.com/2021/06/24/island-hopping-in-san-francisco-bay-from-angel-to-alcatraz-and-more/

We can all agree the Hawaiian islands are heavenly. Catalina? That’s lovely, too. But the San Francisco Bay is a little island paradise all its own, dotted with rocky outcroppings big and small, from the Sisters to Angel Island, Alcatraz and more. James Martin tallies an astonishing 48 in his book, “The Islands of San Francisco Bay,” from Belvedere to Yerba Buena, Red Rock and East Brother, whose Victorian-era light station and B&B is still shuttered.

Here are three you can explore with ease, including one you may not even realize is an island.