World's Oldest Animals

World's Oldest Animals

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What if I told you that there are tortoises alive today that existed during the days of Charles Darwin? And if you knew some animal celebrated their 400th birthday comfortably without making a fuss out of it, how would you feel? Asides from natural conditions that could result in death, there are some living animals who defy nature and live for hundreds and thousands of years. I know you’ll love to take a trip through ten of the world’s oldest animals.
10. Bowhead Whales
Bowheads are one of the longest living mammals on the planet. They are adapted to living all year in frigid weathers like those in the Arctic seas. Their bodies are well adapted to the hostile environment in the water as their blubber for insulation is up to 29 inches thick. These creatures are known for the beautiful songs they use to communicate with one another. They measure around 60 feet and weigh as much as 100 tonnes making them the fifth largest mammal on earth. Bowheads are also one of the longest living animals as one species found in 2007 is believed to have existed since 1880. Going by this finding, the animal was at least 130 years old.
While this revelation is jaw-dropping, there is another animal out there that could be as old as 200 years old. Thanks to the way their mouth is shaped, you’d think they are smiling. Their meter-long baleen is made up of 300 plates. Despite their size, they are able to leap out of the water but spend most of their time under the sea ice.
https://www.youtube.com/watch?v=aAMoZbKTTPQ
9. Immortal Jellyfish
How would you feel if someone revealed to you that you’re immortal? Well, one animal has attained that stage in life and they’re flaunting it. Attaining old age and returning as a baby within a twinkle of an eye is one of those things that happen in movies but it is the immortal jellyfish’s reality. These animals start living their life as larvae and swirl around the ocean. After that, they settle on the seafloor and become static polyps before turning into swimming medusa.
What’s more interesting about this animal is how it can restart its life after a challenging event. Whenever they experience an injury resulting from stress or injuries, they can go backward to the polyp stage and start again. They can do this countless times if the opportunity shows up. Some unfortunate ones become prey to larger animals during the larvae stage but those who don’t live for many years. They have roamed the seas for over 700 million years and are known as the oldest multi-organ animal.
https://www.youtube.com/watch?v=Z7d5P0pDVUo
8. African Elephants
Elephants are the largest living land mammal with an average lifespan of 70 years. It is also one of the oldest living animals on our planet. Experts tell their age using the characteristics like their size and number of teeth. It is a process that requires some observational skills and lots of practice. Females start breeding from 10 years and remain fertile until they die. They could give birth to about 7 babies after being pregnant for 22 months.
Elephants are social, smart, and incredibly sturdy creatures. They live and travel in groups with the females becoming the leader of the group. Males are pushed out of the pack when they attain sexual maturity. Their trunk is so powerful that it can carry calves and pick flowers. There are over 300 species of them with most of them living around Asia and Africa. They’ll mourn the death of their family member when they recognize their skull. Elephants are animals thought to hold lifelong relationships in high esteem just like humans.
https://www.youtube.com/watch?v=Aw6GkiCvcWs
7. Ocean Quahog
Ocean quahogs are edible clams with an incredible lifespan. Many of them live to see their 400th birthday and it is normal. The oldest one lived a whopping 507 years when it was sighted off the coast of Iceland in 2006. Scientists could determine its age by counting the growth rings on the shell. Asides from their age, more details hide under their skin. How their shells form tells us how the oceans have changed throughout the years. These creatures are a living testimony to our changing world.
Ocean quahogs spawn by releasing sperm and eggs into the water where they are fertilized. The larvae drift with the current for at least 30 years until they become juveniles and settle at the bottom. Spawning happens only once a year in summer or fall. These creatures do not start reproducing until after six years and become commercially harvestable until age 20. Invertebrates like sea stars, crustaceans, ocean pouts, and a host of others prey on juveniles but when they reach a certain age, it is hard to prey on them.

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