12 Most Longest Living Animals in the World

12 Most Longest Living Animals in the World

Every living being in the world has a certain age. When it comes to humans, their average life span is 72 years, while other living beings are too different. Some may hardly survive for 24 hours, while some live over 1000 years, and a few are immortal.

We’ve compiled a list of some of the most long-lived species.

12. Blue & Yellow Macaw: 104 Years

The Blue and Yellow Macaw is a member of the large parrot family of South American origin. These parrots inhabit tropical forests in the woodlands and savannahs of South America. Macaws have a long lifespan, and if they get a favourable environment, they can live more than 100 years. There was a specimen of the longest-lived blue and yellow macaw in England that lived for 104 years. This species is quite popular in aviculture. As they are attractive in colour, talkative, and close bonding with humans. These macaws are also known as the Blue and Gold macaws.

11. Pacific Geoduck: 168 Years

The Pacific Geoduck is a large species of saltwater clamp. This clamp species is native to the coastal waters of the eastern North Pacific Ocean, from Alaska to Baja California. These oversized clams may live for more than 165 years. The oldest living specimen is 168 years old, which is the oldest on record. Their size grows by more than an inch throughout the first several years, especially until the fourth year. Their neck and siphons can grow up to 1 meter, i.e. 3 feet and 3 inches, while their shell is 6 to 8 inches long.

10. Red Sea Urchin: 200 Years

The Red Sea Urchin is a sea urchin that found in the northern-eastern Pacific Ocean, from Alaska to California. Avoiding extreme wavy areas, they can seen on rocky shores and in shallow water up to 300 m from the low-tide line. They use their spines like stilts for crawling on the ocean floor to move forward. Scientists have found a few specimens of red sea urchins that are more than 200 years old.

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09. Tortoise: 255 Years

Tortoises are reptiles that considered one of the longest-living vertebrates. The Galapagos giant tortoise is the world’s largest and one of the longest-living tortoises. This species of tortoise can survive in the wild with an average life span of 177 years. Harriet, a 175-year-old Galapagos tortoise, died of heart failure in 2006. 187 year old a Seychelles tortoise named Jonathan received the title of oldest living land animal in the Guinness World Records. Adwaita, a male tortoise, died at the age of 255 years in the Alipore Zoological Garden in Kolkata. This Aldabra species’ male weight was about 250 kg, while this species of tortoise’s average lifespan is between 150 and 250 years.

08. Tube Worm: 300 Years

Escarpia Laminate is one of the longest-living tube worms. These invertebrates prefer a stable environment in the deep sea. They live in the Gulf of Mexico at a depth ranging from 1000 to 3000 metres below sea level in a cold seep area where hydrocarbons leak from the seafloor. These organisms live up to the age of 100 to 200 years, but some specimens are more than 300 years old. Lamellibrachia Luynesi, another species of tube worm, may live for 170 to 250 years. But, this species is quite unique from other vent creatures because they grow slow and meet a length of more than 6 feet. Tubeworms found throughout the Atlantic Ocean, especially in the shallow parts of the Gulf of Mexico. Predators’ deficiencies lower their death rates and allow them to live long.

07. Greenland Shark: 400 Years

The Greenland Shark is the largest species of shark, also known as the Gurry Shark and Gray Shark. As they belong to the family of sleeper sharks, they are slow swimmers with low activity levels and a perceived non-aggressive nature. These species of sleeper sharks are very similar to the Pacific and Southern sleeper sharks. These sharks are only found in the North Atlantic and Arctic Oceans, at depths ranging from 4000 to 7000 meters below the sea surface. The Greenland Shark is the longest living vertebrate species, surviving up to 400 years and reaching sexual maturity at the age of 200 years. According to a study of radiocarbons in their eye lenses, Greenland sharks can live for at least 272 years and up to 392 years.

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06. Ocean Quahog: 507 Years

The Arctica Islandica known as Ocean Quahog is a species of edible clam. These marine bivalve mollusks inhabit the North Atlantic Ocean. This species of saltwater clam lives longer than any other bivalve or freshwater pearl mussel. Ocean Quahog survives for more than 400 years. But, an individual specimen caught off the coast of Iceland in 2006 was 507 years old. This specimen is also known as Ming and Hafrun. Scientists find out their age by counting the rings that emerge on their shells.

05. Black Coral: 4265 Years

Corals are marine vertebrates composed of the exoskeletons of other vertebrates, known as polyps. These polyps keep growing while copying themselves from other genetically identical copies causing the coral exoskeleton’s structure to expand over time. As a result, coral composed of several creatures rather than a single organism. Corals may survive for over 1000 years, but deep-water black corals live longer than other corals. In March 2009, a 4265-year-old specimen found at a depth of 300–3000 m, which was one of the world’s oldest living organisms.

04. Antarctic Sponge: 10,000 to 15,000 Years

Sponges are vertebrates like coral, a colony made up of the exoskeletons of organisms that have lived for many thousands of years. Some species of sponges are very long-lived, and one of them is Scolymastra Joubini, or Anoxycalyx Joubini, a species of Antarctic sponge. Determining their actual age is a challenge. But based on a study, it can be estimate that this species of the sponge was 23000 years older. Although they could live between 13,000 and 40,000 years. But since the last glacial maximuized, the sea level has changed a lot, and thier age remained 15000 years. Antarctic sponges beneath the surface at depths ranging from 330 to 6560 feet. This extreme cold temperatures and constant pressure declins their growth rate.

03. Seagrass Colony: 200,000 Years

Seagrass is the sole flowering plant in marine habitats and is found in salty and brackish seas from the tropics to the arctic. These marine grasses developed from terrestrial plants. And established themselves in the water between 70 and 100 million years ago. Some seagrass species can grow in a year from a single plant, but slow-growing species like Poseidonia might take hundreds of years. Seagrass is the longest living organism. In fact, the oldest known plant species of Mediterranean seagrass is a clone of Posidonia Oceanica. It might be 200,000 years old, dating back to the Late Pleistocene Ice Ages. Seagrass are also known as the lunges of the sea. The seagrass meadows and seagrass beds formed by the underwater ecosystem. Through photosynthesis, one square metre of seagrass can produce 10 litres of oxygen every day.

02. Immortal Jellyfish: Immortal

Tuhrritopsis Dohrnii is a tiny, biologically immortal jellyfish that is less than 0.02 inches in length. These jellyfish can survive in temperate to tropical waters around the world and found in the Mediterranean Sea. Jellyfish of this species are also called Immortal Jellyfish because of their ability to live forever. It begins as a larva before established on the seafloor and transforming into medusa and jellyfish. If a mature Immortal jellyfish gets damaged or faces food challenges, it transforms itself into polyps. These polyps turn into jellyfish, and this cycle continues in the same way, and they never die, even as they mature. If they don’t fall sick and are not hunted by a predator, these jellyfish will get immortality.

01. Hydra: Immortal

Hydra is a group of small invertebrates with soft bodies that resemble jellyfish. It is a freshwater organism from the small Cnidaria phylum. Hydra can survive in both temperate and tropical regions. Hydra has been an interesting topic for biologists because of its regenerative ability. These organisms don’t die even after reaching maturity, nor can their age determine. They, like the Immortal Jellyfish, have the potential to live indefinite. They made up of a large scale of stem cells with constant regenerating duplicates or clones. But, hydras can’t survive forever in natural conditions as they are at risk from diseases and predators. But if they are not in danger, they may survive by being immoral.

These are some of the world’s longest-living organisms. We observe a short lifespan that terrestrial organisms have a shorter lifespan than marine organisms. There may be some secret to surviving in the sea for a long time, or the environment under the sea is very stable. Will our lifespan increase by 100 years or more if we humans start living in the deep sea like other marine creatures? What is your take? Tell us in the comments section.