Sea Turtle Lifespan: How Long Do Sea Turtles Live?

Sea Turtle
© Achimdiver/

Written by Jennifer Gaeng

Updated: June 29, 2023

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Turtles breathe out of their butts

A green turtle swimming in the sea. Turtles use cloacal respiration in addition to respiration with their lungs.

© Sullavan

Up until recently, limited research has been available on the lifespan of Sea Turtles. This is because migratory marine species are difficult to track, making wild animal lifetime studies problematic. Marine turtles, for example, may survive generations of researchers.

For the first time, scientists have identified a way to utilize DNA to accurately estimate the lifespan of this species. Find out how long sea turtles are believed to live in the following paragraphs!

How Long Do Sea Turtles Live?

Sea turtle hatchlings on the sand

A new study has determined the lifespans of five marine turtle species, the Leatherback, Loggerhead, Olive Ridley, Hawksbill, and Flatback.


Until recently, green sea turtles were the only species whose genome sequence was made public. However, using innovative environmental management research, a new study has determined the lifespans of five marine turtle species.

Sea Turtle SpeciesAverage Lifespan
Leatherback sea turtle90.4 years
Loggerhead sea turtle62.8 years
Olive Ridley sea turtle 54.3 years
Hawksbill sea turtle53.2 years
Flatback sea turtle50.4 years
The Leatherback Sea Turtle has the longest lifespan of the five marine turtles studied, and it is the largest in size.

Sea turtle lifespan can also be predicted by their weight, according to the researchers. In general, heavier, and longer-shelled species live longer.

Therefore, it is not surprising that the Leatherback sea turtle is not only the largest living sea turtle species but also has the longest expected lifespan.

Lifespan Prediction Limitations

This recent research represents a generalization about the entire species. It’s impossible to forecast life expectancy because of the effects of the environment and population variation. As a result, it is not possible to estimate individual lifespans using genetics, but the lifespans of an entire species.

Common Causes of Death For Sea Turtles

Sea Turtle Sitting on Moss by Rocks

Sea Turtles are dying from natural predators, human activity, pollution, commercial nets. hunting. and climate change.

©Ezpete – Public Domain

Natural Predators

Sea turtles have several natural predators. Tiger sharks and killer whales consume adult sea turtles. Dogs, seabirds, and raccoons consume sea turtle eggs and hatchlings.

Human Activity

Sea turtles also face various risks from human activity. Disturbances like noise can scare sea turtles away from their nesting places. Artificial light can cause problems since hatchlings will crawl toward artificial light sources as they would toward daylight. The glare often confuses hatchlings, leading them astray.


In rare circumstances, sea turtles might perish from ingesting litter mistaken for food or getting caught in debris.

Commercial Nets

The most significant problem to the survival of sea turtles is the possibility of drowning in big commercial nets that are used to collect shrimp. Sea turtles cannot live underwater for a long time without surfacing.


Other risks to sea turtles include illegal hunting for flesh and shells and illicit egg gathering.

Climate Change

Sea levels are rising due to climate change, and storms are wreaking havoc on their seaside homes. Sea turtles could be exposed to new predators and coral reefs could be destroyed because of changing currents caused by warming oceans.

Are Sea Turtles Dying Off?

Green Sea Turtle in the Sand

All species of sea turtles aside from the flatback are currently endangered.

©Magdalena Paluchowska/

All species of sea turtles, besides the flatback sea turtle, are designated as endangered or critically endangered. Marine turtles are adored but in jeopardy. Discovering how long they naturally live in the wild is crucial for conserving populations and anticipating their risk of extinction.

How You Can Help

You can help protect our sea turtles by not littering and also by leaving sea turtle eggs alone on the beach.

©Steve Jurvetson / Creative Commons – Original

Protecting marine turtles is as easy as following a few simple guidelines:

  • Make sure you don’t litter the beach.
  • Avoid shining artificial light on beaches at night where sea turtles lay their eggs.
  • Don’t use eyeglass frames or combs manufactured from sea turtle shells. There is unlawful.
  • Continue to educate yourself and others about the plight of endangered sea turtles.

The Takeaway…

Green Sea Turtle swimming along tropical coral reef, Bonaire

Determining the lifespan of our sea turtles aids us in predicting extinction risk.

©Isabelle Kuehn/

Every sea turtle species is threatened, endangered, or extremely endangered. Poaching, fishing gear entanglement, and even climate change threaten their populations severely. To conserve and protect an animal species, we need to know how long it will take for populations to develop and recover, and how long it will take for animals to reach reproductive age.

In the case of fragile species like sea turtles, estimating lifespans without knowing lifespan forecasts might be tricky. However, this recent discovery provides a way to anticipate other species’ lifespans without catching and releasing or following a single individual. By predicting extinction risk and population increase, we can start planning effective conservation strategies for our beloved marine reptiles.

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About the Author

Jennifer Gaeng is a writer at A-Z-Animals focused on animals, lakes, and fishing. With over 15 years of collective experience in writing and researching, Jennifer has honed her skills in various niches, including nature, animals, family care, and self-care. Hailing from Missouri, Jennifer finds inspiration in spending quality time with her loved ones. Her creative spirit extends beyond her writing endeavors, as she finds joy in the art of drawing and immersing herself in the beauty of nature.

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