Concerned about a rising tide of visitors since the late 1980s, when as many as 10,000 people were brought to the bay daily by tour buses and snorkel companies, the City began a program in the late 1990s based upon the principles of preservation and conservation. When visiting the beach here, please take time to watch the important training video for first-time visitors.  Hanauma Bay is open daily except on Tuesdays, when the exotic fish get some alone time away from us pesky humans.