Giant tortoises are rare today but once roamed four continents


Frans Lanting/FLPA By Colin Barras TORTOISES evolved into giants on at least seven occasions and on four continents. The finding undermines the long-standing idea that tortoises become enormous only if they are stranded on remote islands. There are more than 40 species of tortoise, the most spectacular being the giant tortoises. On the Galapagos islands in the Pacific and Seychelles islands in the Indian Ocean, these animals can have shells more than 120 centimetres long. These islands cover just a few thousand square kilometres. In contrast,
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