This one-ton turtle once ruled South America’s rivers — until a changing planet proved too much for even the largest ...

Throughout the history of life on Earth, some species have evolved to incredible sizes. Animals today can reach enormous sizes, such as the biggest polar bear found in the U.S., which outsized the ...

The leatherback sea turtle (Dermochelys coriacea) is the largest living sea turtle in the world — and also one of the most threatened. According to the IUCN Red List of Threatened Species, the global ...

The fossil of an ancient giant sea turtle — estimated to have been as long as a small car — was discovered in Spain, representing the largest marine turtle to have been found in Europe. Until now, the ...

The giant South American river turtle, also known as the Arrau turtle, is a threatened species native to freshwater lakes and rivers in the rivers and lakes in the Amazon and Orinoco basins. “We ...

Scientists studying the world’s largest river turtles, a South American species that grows to a length of nearly a meter, or 3 feet, have found the largest nesting aggregation ever recorded. Using ...