Which is the animal on the earth having largest life span?

Answer 1

In actual lifespan, there are individual plants (notably large coniferous trees) that live many hundreds of years. Some species of trees, such as aspen, reproduce from a single stem into many genetically identical trees. So a colony of these could theoretically live indefinitely in the proper environment. Also, bacteria and viruses enter a dormant phase under certain conditions. While not actively alive, they are not dead either.

Some long-lived individual organisms:

• Humans can live to over 120 years, elephants to about 80.
• Individual sea tortoises and koi fish can have lifespans up to 200 to 250 years
• Among mammals, Bowhead whales have been estimated to live 200 years
• Black Coral and barrel sponges may live up to 2000 years
• Methuselah tree - a bristlecone pine within the Inyo National Forest in California has been measured to be over 4,800 years old.
• Creosote bush - like the aspens and Norway Spruce, the bush constantly branches into clonal colonies, one in the Mojave Desert is estimated at 11,700 years old
• Mediterranean Sea grass (constantly growing colonies) could live up to 100,000 years or more

Answer 2

The ribbon worm is the longest recorded creature, specimens of which have been found to reach 55 meters. (which is still alive)

Answer 3

Most likely the giant tortoise, which commonly lives 150 years.

Answer 4

mother blue whale