Dolphins used to look like humans and lived in Atlantis

It is thought that the ancestors of dolphins lived on land in a time long past. Once the ancestors of dolphins started living in water, they found out that the medium of water was hard to see through – an object 10-15 meters away is the farthest a dolphin’s eyes can see even if waters are crystal-clear, not to mention dark or murky waters. So the ancestors of dolphins decided to possess an ability that would enable them to “see” with their ears by listening to echoes. Sound waves travel through water at a speed of 1.5 km/sec, which is almost five times faster than sound traveling through air.

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Dolphins produce clicking sounds (localization pulses) to make the sound waves bounce off objects in the water and return to the dolphin in the form of an echo.

High-frequency sounds do not travel far in water. Low-frequency sounds travel farther because of their longer wavelength and greater energy. Echolocation is used by dolphins for determining distance to a very small target (5-10 cm) within close range (5-10 m). It is thought that dolphins can locate shoals of fish at an intermediate range (up to several hundred meters) by using echolocation.

Recent studies of Australian scientists indicate that Atlanteans, the people who lived on a legendary island first mentioned by Plato, may have been the ancestors of dolphins.

“No matter how weird it may appear, dolphins used to have two legs and a couple of arms in place of fins. They lived side by side with the people of the Stone Age,” said Dr. Leslie Huskerway, a biologist.

Researchers at Melbourne University conducted a research into the human DNA and that of marine mammals. Using comparison as a method of study, researchers found that the dolphin was the nearest relation of the human being. The dolphin may have parted company with Homo sapiens some 250 thousands years ago. Scientists have long known that the creatures had lived on land in the distant past. Their highly developed intellectual powers have always intrigued researchers.

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