Becoming a mother at 70-years-old doesn't present a problem - for a Galapagos giant tortoise. Nigrita produced her baby a few weeks ago at Zurich Zoo in Switzerland which has been her home since 1946. ... Mother weighs in at round about the 500lbs mark while junior is only a few ounces but eventually - aged about 40 - he will reach her size. Giant tortoises can grow to be five-feet long, live to be 150 years old and are not ready to breed until they are about 25.
The Leatherback Sea Turtle is the largest turtle in the world, weighing approximately 900kg. Contrary to appearance, the leatherback doesn't actually have a shell. What looks like a shell is in fact a leathery skin supported by small bones. This gives it a flexibility that a solid shell would not provide, allowing it to dive to astonishing depths.