Explained: World’s biggest waterfall is hidden under ocean – here’s what you never knew about Denmark Strait Cataract​on February 19, 2026 at 8:55 pm

It stretches nearly 480 kilometres in width. Scientists estimate that millions of cubic metres of water fall downward every second. Its flow rate is several times greater than that of the largest visible waterfalls on earth. It stretches nearly 480 kilometres in width. Scientists estimate that millions of cubic metres of water fall downward every second. Its flow rate is several times greater than that of the largest visible waterfalls on earth.