Which type of animal was found to be at least 272 years old, the world’s longest-living vertebrate?
Correct answer: Greenland shark
RedSeaDiver
I wonder if the cold waters slow down its metabolism?
Player #61551839
How do they know how old it is?
Player #25141152
I never heard of it interesting fact
Dawn
Is it a vertebrate if it has no bones?
Player Say what!?
Satya Tang, True that, but her question is HOW do they determine its age. Good question.
Fancypants
A shark is not a vertebrate
Little Luna
Dawn, yes, definition of vertebrates includes having a backbone, even if it is cartilage rather than bones
Jacko
Discounted shark as it has no bones.
Player #96070952
Player #61551839, they cut it open and count the rings, sorry couldn't resist
Yana
Player Say what!?, They count the number of candles on it's birthday cake.
Julie
Wow! I love the things you learn from this game!
Englebert
Dawn, I agree surely cartilage doesn't count.
Johninja
Player #61551839, they cut it in half and count the rings
WendyDarling
Player #25141152, how large do they grow?
Dee
Sharks don’t have bones. The are made with cartilage. ?
Christopher
sharks have no known bones
ZimboBimbo
I thought sharks had NO bones ?
RA Skelton
Photo? Comparison age of the other answer options?
Player #12334668
Dawn, that's what I thot.
klaudija
Dawn, an animal doesn't have to have a backbone made from bone to be a vertebrate.
Cherish
Someone needs to explain how they can determine the age of these sharks. They may be pretty rare so do they just kill one and examine it? I doubt this.
jay
So, they grow 1.5cm a year, and get up to 7m in size... how old would that be? Reach sexual maturity at 150 years old!
jay
Rubenovik, but humans have found a way to eat the meat regardless. Imagine eating something that is 400 years old!
jay
Player Say what!?, according to Wiki, they do radio carbon dating of the lens of the eye.
Player #22277920
Mama Bear, yeah, that was my question as well. 🤔
LilMzSunshine
Mama Bear, thank you! I was wondering the same thing.
Rubenovyk
Fun fact: Greenland Sharks, if consumed, are poisonous.
Gunnar Gunderson
Spyder , So it's a vegetable or mineral?
Julia
Player #61551839, It was just a guess.
Shonkatron
Player #61551839, they count the rings
shs and shz
He's a very crusty lad
Satya Tang
Cookie Bean, In today's progress if one can tell the age of stone or tree, it is not difficult find the age of an animal.