Which animal lives longest?
Which animal lives longest? Giant tortoises often live more than 100 years, but they aren't the longest-living animal its the sponge, below left (Smithsonian.com)
Which animal lives longest?
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Sticking with recorded history, the answer might surprise you. Its not elephants, which live for about 30 or 40 years. Its not giant tortoises either, even though they often ripen to be well over 100 years old. Its not even that record-breaking, 507-year-old Arctic clam named Ming.

Nope, the longest-living animal in the world is a sponge. Sponges are among the simplest animals on the planet headless, armless and completely void of internal organs. But theyre still technically animals. And the glass sponge can live for 15,000 years.

The only other animal that might give it a run for its money is the immortal jellyfish. Under normal circumstances it lives and dies just like any other jellyfish. But put it under extreme stress and guess what? It ages backwards!

It transforms all of its adult cells into a younger state. And it can do this de-aging thing over and over again. Kind of makes the oldest human a 122-year-old French woman who was named Jeanne seem downright young, doesnt it?

Critical thinking challenge: Is there any connection between a 100-year-old tortoise and a 100-year-old human?

Source URL: https://www.tweentribune.com/article/tween56/which-animal-lives-longest/

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Assigned 58 times

  • eric5k9
    5/15/2014 - 12:07 p.m.

    turtles are so cool I have a turtle of my oun I named him runner when I was realy young and hes still alive im so happy its awesome

  • CN23green
    5/15/2014 - 12:59 p.m.

    I never even knew sponges could even live that long. 15,000 years old is definatly, without a shadow of a doubt, the longest any living being can survive on the earth.

  • km31purple
    5/15/2014 - 01:01 p.m.

    I think it is cool how something so simple like a sponge can live that long. I always thought the tortoise was the longest living animal, but I guess not.

  • ThomasinIndigoQ4
    5/15/2014 - 02:48 p.m.

    Wow, I was very surprised at what the oldest living thing was! People say the more complicated an animal is, it lives longer, oh how wrong they were at that!

  • DakotaGreenQ4
    5/15/2014 - 02:50 p.m.

    I think that it is cool that a sponge is a animal and how long they can live don't you think it is cool to

  • star-baseballplayer
    5/15/2014 - 03:36 p.m.

    Yes a 100-year old tortoise and a 100-year old man are somewhat similar. For example they are the same because when you grow old you start to become slower and as turtles grow older they go slower too. Another example that they are similar is that they are both fragile because as turtles and people grow older they grow weaker and cant do a lot of things.

  • Nord-wolves
    5/15/2014 - 04:11 p.m.

    I think that theres a connection between the two. And the connection is simple, there both one hundred. And they have both been through a lot.

  • GavynBlackQ4
    5/15/2014 - 04:45 p.m.

    I think it is very cool that animals such as the sponge and the jelly fish thing can live up to, or passed 15,000 years because,m I mean us humans only live to be 70 to 90 years old but a sponge on the other hand is way awesome.

  • JordanTRedQ4
    5/15/2014 - 04:47 p.m.

    This is really cool I thought the oldest animal would be like a coral or a clam. I did not even think about a jelly-fish, the tortoise also seems reasonable but still it is not old enough.

  • Scherme1888
    5/15/2014 - 05:27 p.m.

    Thats amazing that the sponge is the oldest living animal on the planet. I thought it would be the Horse Shoe Crab. But anyway i thought it was the tortoise until now.

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