The specific size of the bay helps create the world's most extreme tides. Water levels rise and fall by as much as 48 feet every day when 100 billion tons of seawater crash into the shore.

But over the past 50 years, some places have occasionally run afoul of the act. In San Francisco, the wastewater system ...

Surfer pulled from Byron Bay's Main Beach unconscious The 59-year ... People should consider staying out of the water and avoid walking near surf-exposed areas,' the warning reads.