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This Amazon tribe have been climbing trees for so long that their feet have evolved. The Huaorani tribes are an indigenous group of people found in Eastern Ecuador. They are an isolated tribe who do not have much contact with the outside world. They have about 4,000 members. The Huaorani, sometimes called Waorani or Waos, are a native Amerindian tribe whose language bears no relation to any other tongue, not even Quechua, which is widely spoken in Ecuador. The tribe primarily eats monkeys and different small game, which they hunt using spears and blow guns. The small gene pool, the constant exposure to the harsh environment, and the need to constantly climb trees to get to the monkeys have made their feet flatter. Some tribe members have 6 toes on each foot. Some even have 6 functional fingers on each hand. This is not the only tribe to have evolved to their environment. Some tribes in Malaysia can stay underwater for extended periods to fish for pearls. Their lungs have developed to p...