Ariel Rubissow Okamoto ’81 is co-author (with Kathleen M. Wong) of the fascinating Natural History of San Francisco Bay (University of California Press), which also explores its human history and how each affects the other. While the bay is home to healthy eelgrass beds, young Dungeness crabs and sharks, and millions of waterbirds, it also is marked by oil tankers, laced with pollutants, and crowded with 46 cities. The guide explores a number of subjects relating to this unique body of water—including fish, birds and other wildlife, geography and geology, the history of human changes, ocean and climate cycles, endangered…