Wild dolphins have learned how to walk on water by copying tricks developed by captive animals, a 30-year study found. Scientists in Australia observed that dolphins in Adelaide learned tail-walking – when the animal rises vertically out of the water and moves forward or backwards across it – from a dolphin called Billie which had spent time in a dolphinarium. Dolphins rarely do this in the wild but it is a standard part of the routine in almost all dolphinaria.
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