Because of unusually high death rates owing to newborn mortality, illnesses, predators, harsh weather, habitat degradation, or competition for food and shelter, animals living in natural settings seldom reach their full potential age.
Here are ten animals that would have the longest lifespans if they lived in perfect conditions.
Macaws are members of the parrot family and are distinguished by their vividly colored feathers. They have a long lifespan and can live to be 60 to 80 years old in the right environment. They live in the jungles and eat a variety of nuts and seeds. Unfortunately, due to habitat destruction and the illicit pet trade, the majority of these magnificent birds are endangered in the wild, and a few are now extinct.
9. African elephants
African elephants are the largest surviving land mammals and one of the oldest, with an average lifetime of 70 years. Several features, such as the size and number of teeth, can be used to determine the age of a person. It’s a technique that needs keen observation and a lot of practice! Females reach breeding age at the age of 10-12 years old and, unlike humans, may stay fertile for the remainder of their lives. They may give birth to a total of 7 children. Being a mommy elephant, on the other hand, is no simple feat. Their pregnancy lasts nearly three times as long as a human pregnancy, at 22 months.
8. Longfin Eel
Longfin eels may live up to 60 years, but the record for the oldest surviving eel is 106 years! They are endemic to New Zealand and Australia, where they spend the most of their time hidden in freshwater streams before traveling to the Pacific Ocean to reproduce. They only accomplish this once in their lives and die shortly after. They are slow-growing creatures, gaining about 1-2 cm each year, but females can grow to be as long as 73–156 cm.
7. Galapagos Giant Tortoises
It’s not just the size of the Galapagos Giant Tortoises that should be noted; it’s also their age. They may live to be far over 100 years old, with the oldest being 152 years old! However, the oldest is not the most well-known. Lonesome George was the world’s rarest creature for a while, as he was the last remaining Pinta Island Tortoise on the islands. He died in 2012, when he was approximately 100 years old. Giant tortoises, like many of the other species on our list, live in slow motion, eating on grass and other plants, basking in the sun, and sleeping for up to 16 hours a day.
6. Red Sea Urchin
Red sea urchins are said to be nearly eternal, since they have been known to survive for over 200 years without showing any symptoms of aging. They are considerably more likely to be eaten by a predator than to succumb to an age-related illness, and a 100-year-old is just as healthy and capable of reproducing as a young person. Radiocarbon dating may be used to determine the age of these spiny echinoderms by detecting the amounts of carbon-14.
5. Koi Fish
Japanese Koi have an average lifespan of approximately 40 years, however they may live much longer if kept in the appropriate environment. When one koi named “Hanako” died in 1977, she was a staggering 226 years old. By measuring growth rings on her scales, scientists were able to estimate her age.
4. Bowhead Whale
The bowhead whale (Balaena mysticetus) is the world’s oldest mammal. According to the National Oceanic and Atmospheric Administration, the precise lifetime of Arctic and subarctic whales is unclear, however stone harpoon points found in some captured individuals show that they can live for more than 100 years and may perhaps survive for more than 200 years (NOAA).
3. Greenland Shark
Greenland sharks are the world’s longest-lived vertebrates, surviving between 300 and 500 years. They move at a snail’s pace, averaging 0.76 miles per hour. Females may not achieve sexual maturity until they are 100 to 150 years old, which is a lengthy childhood! Despite their enormous size and lengthy lifetime, scientists have been baffled by these sharks for years. They found a novel way of determining age that includes radiocarbon dating the lens of the eye only recently. Every year, new tissues are added to the lens, and the amount of carbon isotope contained in the tissues may be used to determine the age.
2. Ocean Quahog
Ocean Quahogs are a type of edible clam with a long life cycle. Many will survive to see their 400th birthday, and the oldest one ever found off the coast of Iceland in 2006 was 507 years old. Scientists were able to establish the age of the shell by counting growth rings on it, similar to how trees are dated. They can also learn about other topics. Scientists can understand how the waters have changed over time by looking at how the shells form through time – they are a living organism and a representation of life in a changing environment!
- Immortal Jellyfish
Can you imagine what it would be like to be immortal? Going back in time and beginning again as a newborn instead of dying in old age? This is the stuff of fantasies for us. It’s real life for the immortal jellyfish. These incredible creatures begin their lives as planula, which float around in the ocean. They then become static polyps on the seafloor before changing into swimming medusa. So far, everything has gone according to plan. However, if immortal jellyfish suffer damage or stress as a result of changes in their environment, they can return to the polyp stage and begin anew. And if they have the chance, they can do it again and again. However, many will not since they will become supper for other creatures.