Skip to main content
Non classé

Microplastics Found in Every Sea Turtle Nest Worldwide

By 19 October 2023October 26th, 2023No Comments

The image of a nesting sea turtle has long been a symbol of resilience and hope in our natural world. These ancient creatures have navigated the challenges of evolution for millions of years. However, a disheartening discovery has recently cast a shadow on their already challenging journey.

Microplastics (plastic particles less than 5mm in diameter) have infiltrated every sea turtle nest around the world, threatening the very existence of these majestic animals.

Ingesting plastics is not a harmless mistake, the consumption of this man-made material can cost sea turtles their lives. 

Sea turtles have faced an array of threats over the years, including habitat lossclimate change, and bycatch in fishing nets. Now, they face a new adversary – microplastics. These tiny plastic particles are now found in sea turtle nests.


The Global Scourge of Microplastics

Microplastics originate from various sources, including the breaking of larger plastic items. These tiny particles pose a grave threat to marine life, as they are easily ingested by a wide range of organisms, causing a cascade of ecological consequences.

The presence of microplastics in sea turtle nests has emerged as a dire revelation, highlighting the extent to which our plastic pollution has infiltrated even the most remote and pristine environments on Earth.

Researchers from across the world have documented the presence of microplastics in sea turtle nesting areas, and the implications are deeply concerning.

Sea turtles nest on sandy beaches. This image shows a loggerhead sea turtle nesting in Florida, USA.


Unveiling the Study

A comprehensive study conducted by a team of marine biologists and environmental scientists set out to assess the extent of microplastic contamination in sea turtle nests across the globe.

The study involved collecting and analyzing samples of nesting sites of various sea turtle species on every continent where sea turtles are found. The results were nothing short of alarming!

Microplastics were detected in every single sea turtle nest that was examined, regardless of the species or geographical location. This revelation underscores the global reach and pervasiveness of microplastic pollution, leaving no corner of the world untouched.

Microplastics found in sand (less than 5mm in diameter)

The Perilous Journey of Sea Turtle Hatchlings

To comprehend the gravity of this situation, it is essential to understand the life cycle of sea turtles and the critical role that nests play in their survival.

Female sea turtles return to the same beaches where they hatched to lay their eggs. The eggs are carefully buried in nests, and the mother turtles provide no parental care beyond this point.

Once the hatchlings emerge from their eggs, they must embark on an arduous and perilous journey to the sea. Guided by the natural light of the moon and stars, they instinctively crawl toward the water. However, this journey is fraught with challenges, and only a fraction of hatchlings survive to adulthood (1 in 1,000).

Microplastics add a new layer of complexity to this already treacherous journey. As hatchlings make their way from the nest to the ocean, they encounter microplastics in the sand. These tiny plastic particles are often mistaken for food by the hatchlings, and their ingestion can lead to a range of detrimental effects. 

Loggerhead hatchlings making their way to the ocean (Picture taken with the Bald Head Island Conservancy) 

The Silent Threat to Hatchlings

Microplastics pose several direct and indirect threats to sea turtle hatchlings. When ingested, these particles can block the digestive tract, preventing the proper absorption of nutrients.

This can result in malnutritionstunted growth, and reduced survival rates. Furthermore, the chemicals present in plastics can leach into the hatchlings’ bodies, leading to toxic effects that may harm their development.

In addition to the direct harm they pose, microplastics in sea turtle nests also affect the sand temperatureSand temperature plays a crucial role in determining the sex of sea turtle hatchlings, with warmer temperatures leading to more females and cooler temperatures producing more males.

*For more information on how the temperature of the nest determines the sex of hatchlings, visit our other article below:

No More Male Turtles, Another Threat To Turtles

The presence of microplastics can alter the sand’s thermal properties, potentially skewing the sex ratio of sea turtle populations, which can have profound implications for their future survival.

Leatherback hatchlings emerging from their nest in Florida, USA. Typically, female turtles will be at the top of the nest, as temperatures are warmer, and males will sit at the bottom of the nest, where temperatures are cooler.

Beyond the Nest: The Wider Impact on Sea Turtles

The dangers of microplastics do not end with the hatchlings. As sea turtles grow and venture into the open ocean, they continue to encounter these tiny plastic particles. Adult sea turtles are known to ingest microplastics while foraging for food, mistaking them for prey items like jellyfish.

The consequences of ingesting microplastics are not limited to physical harm. These plastic particles can absorb toxins from the surrounding seawater, effectively becoming toxic pills when ingested by marine organisms.

When sea turtles consume microplastics, they introduce these toxins into their bodies, potentially leading to a range of health issues.

A juvenile sea turtle was found to have ingested 104 pieces of plastic, and unfortunately died as a result (Reported by CNN)

What can we do about it?

Volunteers in Florida (USA) participating in beach clean-ups (2018) 

The presence of microplastics in every sea turtle nest around the world serves as a wake-up call, demanding immediate and sustained action to address the global plastic pollution crisis.

While the scale of the problem may seem overwhelming, there are steps that individualscommunities, and nations can take to mitigate the impact of microplastics on sea turtles and marine ecosystems.

1.     Reduce Plastic Consumption: One of the most effective ways to combat microplastic pollution is to reduce our reliance on single-use plastics. By using reusable bags, bottles, and containers, we can significantly decrease the amount of plastic waste entering the environment.

Plastic straws are in the top 5 contributors to marine plastic pollution, estimated 7.5 Million plastic straws. Unfortunately, paper straws are not a good alternative as they also contain plastic and are not very durable. This is why The Happy Turtle Straw has come up with an innovative idea to create 100% natural straws made purely from rice and tapioca. They are 100% vegan and gluten-free and can last up to 2 hours.

The Happy Turtle Straw is determined to reduce plastic consumption and protect marine life.

The Happy Turtle Straw

Happy Turtle Straws are durable, biodegradable, safe for marine life, and 100% vegan and gluten-free. 

2.     Proper Waste Management: Ensuring that plastic waste is disposed of properly is essential. Recycling and responsible waste disposal practices help prevent plastics from entering waterways and ultimately ending up in the ocean.

3.     Support Cleanup Efforts: Numerous organizations and initiatives are dedicated to cleaning up plastic waste from beaches and oceans. Supporting and volunteering for these efforts can make a tangible difference in reducing plastic pollution.

4.     Advocate for Policy Changes: Encouraging policymakers to enact legislation that restricts the use of single-use plastics and promotes responsible waste management is crucial. By advocating for change at the governmental level, we can address the root causes of plastic pollution.

5.     Education and Awareness: Raising awareness about the impact of microplastics on sea turtles and marine ecosystems is essential. Education campaigns can inspire individuals and communities to take action and make more sustainable choices.

Check the link below for more ideas on how you can reduce your plastic waste:

15 Ways To Reduce Your Plastic Waste



The revelation that microplastics can now be found in every sea turtle nest worldwide is a stark reminder of the pervasive nature of plastic pollution and its far-reaching consequences. Sea turtles, already facing a multitude of threats, now confront an additional challenge that could tip the scales against their survival.

It is imperative that we act swiftly and decisively to address this crisis. By reducing our plastic consumption, advocating for policy changes, supporting cleanup efforts, and raising awareness, we can work together to protect sea turtles and the fragile ecosystems they inhabit. The fate of these ancient and awe-inspiring creatures is in our hands, and the time to act is now.

 The Happy Turtle Straw is dedicated to reducing plastic waste in our waterways and finding new innovative solutions to help our marine life, such as endangered sea turtles.