It would not be wrong to say that mortality is a universal law; whatever takes birth dies after a period of time though life span of living things vary. Talking of animals, some live for a few hours while others has a life extending over centuries, which is something hard to believe. In fact, a large number of creatures have an amazingly long life span.
Here is a list of top 10 longest living animals on the earth:
Geoducks are salt water clams, which have an average life span of 160 years, which makes them one of the longest living animals in the world. These clams, which are found in Puget Sound, have a distinctive feature called siphons, which are like necks extending to a length of 1 m.
The next name on the list of top 10 longest living animals on the earth is that of tuatara, the dinosaur like animals with only two surviving species at present. With a life span ranging between a hundred and two hundred years, these are the longest living vertebrates on the planet.
8. Lamellibrachia Tube Worms
Lamellibrachia Tube Worms are under sea creatures which live at great depths reaching the ocean floor. Though their average life span is believed to be nearly 170 years, some scientists are of the opinion that it extends up to 250 years.
7. Red Sea Urchin
Next on this list comes another sea creature called the red sea urchin, which is native to the Pacific Ocean, mostly found in the West Coast along North America. These creatures live in shallow areas, most of the time near the rocky ones where the low tides reach down to 90 m. They can even be seen crawling along the ocean floor with the help of their spines. Red sea urchins can live up to 200 years of age.
6. Bowhead Whales
The credit of being the longest living mammal on the planet goes to the bowhead whales, which are also known as the Arctic whales. Many of them are believed to have surpassed the age of 200 years, while the oldest known amongst them has been 211 years of age.