★ 7.3
★ 8.7
★ 7.5
★ 8.0
★ 9.0
★ 6.5
★ 7.0
★ 6.6
★ 8.4
★ 8.5
★ 0.0
San Francisco Bay is home to various shark species. Alcatraz guards made sure the prisoners knew it, telling stories of sharks to stop escapes.