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The illusion of a waterfall
about 900 km from Madagascar, in the south-western Indian Ocean is an island nation known as Mauritius, on the southwest end of which can be seen an unusual phenomenon - the illusion of an underwater waterfall. Visually deceptive spectacle created in the water due to runoff of sand and silt. Especially exciting it looks bird's-eye view. By the way, the illusion can be seen on Google Maps.
Source: mirfactov.com/