The San Francisco Bay is in many ways comparable with the delta region of the Netherlands. The surroundings of the northern and the southern Bay, the San Pablo Bay, the Suisun Bay and the river delta are densely populated and there is a lot of agriculture. Nature gets into difficulties from all sides by civilisation, and the challenges for a cleaner environment are huge.
The bay is sheltered by the narrow opening of the Golden Gate. At the same time this opening lets pass through the tides of the Pacific Ocean. Many boats for pleasure cruise are suitable to sail on wide waters. But there are many small boats as well, sailing in the on average shallow bay.
