As of 2015, the Kemp's ridley sea turtle is the most endangered with only around 1,000 nesting females left. Accurate population data does not exist for loggerheads, hawkbills, flatbacks, olive ridleys, green sea turtles... More »

The Sea Turtle Conservancy estimates that there are 85,000 to 90,000 nesting female green sea turtles worldwide. The population of males and immature females is not known. More »

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By most estimates, approximately 20,000 female hawksbill turtles are left in the world. They are considered endangered, according to National Geographic. More »

An adult green sea turtle can weigh as much as 300 to 350 pounds, and the leatherback sea turtle can grow up to 1,500 pounds. Green sea turtles are huge animals that can grow as large as 3 to 4 feet in length, while leat... More »

The number of eggs a sea turtle lays depends on its species, but the turtles lay an average of 110 eggs in a nest. Flatback turtles lay the least amount with about 50 eggs in a nest. Hawksbill turtles lay the most eggs w... More »

Yellow-bellied sliders grow from 5 to 12 inches when they are fully grown with males being smaller than females. They can live up to 30 years when they are provided with the right care in captivity. More »

A sea turtle's lifespan ranges from 80 to 100 years. It is difficult to determine the exact age of a sea turtle from physical appearance. Biologists derive age estimates from the maturity and reproductive status of the t... More »