What Is World Sea Turtle Day?
Every year on June 16, people around the world observe World Sea Turtle Day — a day dedicated to raising awareness about the incredible sea turtles that have roamed our oceans for more than 100 million years, and to celebrating the conservation efforts working to protect them.
Sea turtles are among the most ancient and remarkable creatures on Earth. They have outlived the dinosaurs, navigated our oceans for millions of years, and play a vital role in keeping marine ecosystems healthy. Yet today, all seven species of sea turtle are classified as endangered or vulnerable due to human activity.
For homeschooling families in Trinidad and Tobago, World Sea Turtle Day has very special significance. Trinidad and Tobago is one of the most important sea turtle nesting sites in the entire world. The beaches of our islands — particularly Grande Riviere and Matura Beach in Trinidad, and the beaches of Tobago — are among the most critical leatherback turtle nesting grounds on the planet.
At Homeschool Self Study, we believe the natural wonders of our islands are among the greatest classrooms available to us. This World Sea Turtle Day, let us dive deep into the world of sea turtles — exploring their biology, their importance to our oceans, and the powerful conservation story happening right here in T&T.
The Seven Species of Sea Turtle
There are seven species of sea turtle in the world, and Trinidad and Tobago is home to nesting populations of several of them.
Leatherback Turtle (Dermochelys coriacea)
The leatherback is the largest sea turtle on Earth — and one of the largest reptiles alive today. Adults can weigh up to 700 kilograms and measure over two metres in length. Unlike other sea turtles, the leatherback does not have a hard shell — instead, its back is covered with a leathery skin over a mosaic of tiny bone fragments. Leatherbacks primarily eat jellyfish and can dive deeper than any other sea turtle. Trinidad’s Grande Riviere beach is one of the highest density leatherback nesting sites in the world.
Green Turtle (Chelonia mydas)
The green turtle gets its name not from its shell but from the greenish colour of its fat, which comes from its diet of seagrasses and algae. Adult green turtles are herbivores and play a crucial role in maintaining healthy seagrass beds and coral reefs.
Hawksbill Turtle (Eretmochelys imbricata)
The hawksbill is named for its narrow, pointed beak, which looks like a hawk’s bill. It uses this beak to reach into coral reef crevices and feed on sponges. Hawksbills are critically endangered — they have been heavily hunted for their beautiful shells, which have been used for jewellery and ornaments.
Loggerhead Turtle (Caretta caretta)
Named for their large heads and powerful jaws, loggerheads feed on hard-shelled prey like crabs, clams, and sea urchins. They are the most abundant sea turtle species in many parts of the world, though still classified as vulnerable.
Olive Ridley Turtle (Lepidochelys olivacea)
The smallest of the sea turtles, the olive ridley is named for its olive-coloured shell. They are known for mass synchronised nesting events called “arribadas,” during which thousands of females come ashore together to nest on the same beach.
Kemp’s Ridley Turtle (Lepidochelys kempii)
The rarest and most endangered sea turtle, Kemp’s ridley is found primarily in the Gulf of Mexico. It is the smallest sea turtle species and nests almost exclusively on a single beach in Mexico.
Flatback Turtle (Natator depressus)
Found only in the waters around Australia and Papua New Guinea, the flatback turtle has a flat, low-domed shell and nests exclusively on Australian beaches.
Why Sea Turtles Matter: Their Role in the Ocean Ecosystem
Sea turtles are not just beautiful and ancient — they are essential to the health of our ocean ecosystems. Here is why:
Seagrass Maintenance
Green turtles graze on seagrass beds. When they eat, they clip the seagrass, which helps it grow back denser and healthier. Healthy seagrass beds support hundreds of species of fish, invertebrates, and other marine life. Without green turtles, seagrass beds can become overgrown and die.
Coral Reef Health
Hawksbill turtles feed on sponges that would otherwise overgrow coral reefs and smother them. By controlling sponge populations, hawksbills help maintain the balance of coral reef ecosystems — the “rainforests of the sea.”
Nutrient Cycling
When sea turtles nest on beaches, they create nests full of eggs — not all of which hatch successfully. Unhatched eggs, nest materials, and hatchlings that don’t make it to the sea all provide nutrients to beach vegetation and sand dune ecosystems, helping to stabilise coastlines.
Open Ocean Ecosystems
Leatherback turtles consume enormous quantities of jellyfish. Without them, jellyfish populations can explode — harming fish populations, disrupting fisheries, and affecting entire marine food webs.
For Trinidad and Tobago: Healthy sea turtle populations support our fishing industry, our coral reefs, our seagrass beds, and our beaches — all of which are vital to our economy, our food security, and our way of life.
The Threats Sea Turtles Face
Despite surviving for 100 million years, sea turtles now face threats that have pushed all seven species toward extinction:
- Bycatch — Turtles are accidentally caught in fishing nets and on longline hooks set for fish. Bycatch is one of the leading causes of sea turtle death worldwide.
- Poaching and Illegal Trade — Sea turtle eggs, meat, and shells have been harvested by humans for centuries. Despite international protections, poaching remains a serious threat.
- Coastal Development — Artificial lights from buildings, roads, and hotels disorient nesting females and hatchlings.
- Plastic Pollution — Sea turtles, particularly leatherbacks, mistake plastic bags for jellyfish and eat them.
- Climate Change — Warmer sand produces more female hatchlings, threatening future reproduction.
- Ocean Pollution — Oil spills, chemical runoff, and marine debris all degrade the ocean habitats sea turtles depend on.
Sea Turtles in Trinidad and Tobago: A Conservation Story
Grande Riviere, Trinidad is one of the most extraordinary wildlife spectacles on Earth. Every year from March to August, thousands of leatherback turtles come ashore to nest on this small beach on the north coast of Trinidad. At peak season, over 500 turtles may nest on a single night — making Grande Riviere one of the highest density leatherback nesting sites in the world.
Matura Beach, Trinidad is also a major leatherback nesting site, managed by the community-based conservation group Nature Seekers, which has transformed the local community into dedicated turtle guardians.
Tobago’s beaches host nesting leatherbacks and other species, with organisations like the Tobago Turtle Conservation Project working to protect nests and educate the community.
The conservation work in Trinidad and Tobago has produced remarkable results. Populations at some T&T beaches have shown recovery in recent decades — a testament to what community-based conservation, legal protection, and public education can achieve.
What makes T&T’s sea turtle story so powerful is that it is driven by local people. Fishermen who once harvested turtle eggs now act as nest guardians. Communities that once saw turtles as a food source now celebrate them as treasures — and as the foundation of a growing eco-tourism industry that brings economic benefits to local families.
How to See Sea Turtles in Trinidad and Tobago
If your family has never witnessed a sea turtle nesting, it is one of the most awe-inspiring wildlife experiences in the world — and it happens right here at home.
Here are the key guidelines for responsible turtle watching:
- Only visit with licensed tour operators who follow conservation guidelines
- Never shine bright lights or use flash photography near nesting turtles or hatchlings
- Stay behind the turtle until it has finished nesting and begun returning to the sea
- Never touch, disturb, or handle turtles or their nests
- Keep noise to a minimum
- Do not litter on nesting beaches
- Follow all instructions from trained turtle monitors
Best time to visit: May to July for nesting females; July to September for hatchlings.
Key sites: Grande Riviere (contact Grande Riviere Nature Tour Guide Association), Matura Beach (contact Nature Seekers), Tobago (contact Tobago Turtle Conservation Project).
Hands-On Activities for Ages 5 to 11
Here are six activities to bring the wonder of sea turtles into your homeschool.
Activity 1: Sea Turtle Life Cycle Wheel (Ages 5–8)
Explore the incredible life cycle of a sea turtle through a spinning wheel craft.
What to do:
- Cut two circles from card — one smaller than the other
- On the larger circle, divide it into six sections and draw the life cycle stages: nesting female on beach, eggs in sand, eggs incubating, hatchlings emerging, hatchlings swimming to sea, adult turtle at sea
- Write a label and one fact for each stage
- Attach the smaller circle on top with a split pin so it spins; cut a window to show one stage at a time
- Share your life cycle wheel with a friend or family member and explain each stage
Learning connection: Science — life cycles, animal development; Art — craft and illustration; Language Arts — oral explanation
Activity 2: Design a Beach-Safe Turtle Habitat (Ages 6–10)
Understand what sea turtles need from a nesting beach — then design the perfect protected beach.
What to do:
- Research what makes a beach suitable for sea turtle nesting: dark, quiet at night, soft sand above the tide line, no artificial lights
- Draw a large beach scene — include the sea, the sand, the vegetation behind the beach, and the night sky
- Design it to be turtle-friendly: no bright lights facing the beach, clear paths from the sand to the sea, signs for visitors about turtle safety
- Add labels explaining why each feature helps turtles
- Compare your design with a real beach in T&T — what changes would help?
Learning connection: Science — animal habitats, environmental design; Social Studies — conservation; Art — design and illustration
Activity 3: The Hatchling Race — Probability and Survival (Ages 7–11)
Sea turtles lay around 100 eggs per nest, but only about 1 in 1,000 hatchlings survives to adulthood. Explore the mathematics and science of survival with this activity.
What to do:
- Start with 100 tokens (coins, counters, or pieces of paper) representing eggs in one nest
- Roll a dice or flip a coin to simulate different threats at each stage — eggs destroyed by predators, hatchlings caught by birds, young turtles eaten by fish, adults caught in nets
- At each stage, remove tokens based on your “survival roll” outcome
- See how many make it to adulthood
- Calculate: if 1 in 1,000 survives, and each female lays 5 nests per season with 100 eggs each, how many females would be needed to produce one surviving adult?
- Discuss: why does it matter so much to protect every nest and every hatchling?
Learning connection: Mathematics — probability, fractions, large numbers; Science — population biology, conservation; Critical Thinking — cause and effect
Activity 4: Sea Turtle Research Project (Ages 8–11)
Pick one species of sea turtle and become the class expert.
What to do:
- Choose one of the seven sea turtle species
- Research its appearance, size, diet, habitat, nesting locations, and conservation status
- Find out: is it found in Trinidad and Tobago? What are the main threats to its survival?
- Create a fact file or mini-report including a drawing of your turtle, a map showing where it lives, key facts, and what is being done to protect it
- Present your findings to your family — you are now the expert!
- Extension: write a letter from the perspective of your turtle, describing its life and the dangers it faces
Learning connection: Research Skills; Language Arts — report writing, creative writing; Science — biology and conservation; Geography — mapping
Activity 5: Plastic-Free Ocean Pledge (Ages 6–11)
Understand how plastic pollution threatens sea turtles — and make a personal commitment to reducing plastic.
What to do:
- Watch a short video or read about how sea turtles are affected by plastic pollution (leatherbacks eating plastic bags thinking they are jellyfish)
- Walk around your home and count how many single-use plastic items you can find
- Research: what are the reusable or plastic-free alternatives to each item?
- Write a “Plastic-Free Ocean Pledge” — three specific things your family commits to do to reduce plastic waste
- Decorate the pledge with drawings of sea turtles and ocean life, sign it as a family, and display it at home
- Optional: share it on social media using #ProtectOurTurtles
Learning connection: Environmental Science — pollution, ocean health; Values Education — personal responsibility, community action; Language Arts — persuasive writing
Activity 6: Visit the Turtles — Community Eco-Tourism (Ages 5–11)
The best way to learn about sea turtles is to see them in the wild.
What to do:
- Plan a family visit to a sea turtle nesting site in Trinidad or Tobago during nesting season (March–August for adults; July–September for hatchlings)
- Before you go: research the rules for responsible turtle watching and review them as a family
- During the visit: keep a nature journal — note what you see, hear, and feel; draw sketches of the turtles, the beach, and the night sky
- After the visit: write a reflection — what surprised you most? How did witnessing a sea turtle make you feel? What will you do differently to help protect them?
- Optional: make a donation to or volunteer with Nature Seekers, the Grande Riviere Nature Tour Guide Association, or the Tobago Turtle Conservation Project
Learning connection: Science — field observation, animal behaviour; Language Arts — reflective writing; Values Education — stewardship of the natural world; Social Studies — community conservation and eco-tourism
Key Takeaways
Here is what every child should understand about sea turtles and World Sea Turtle Day:
- Sea turtles have lived on Earth for more than 100 million years — they are ancient survivors
- There are seven species of sea turtle, all of which are endangered or vulnerable
- Trinidad and Tobago is one of the world’s most important sea turtle nesting sites — especially for leatherback turtles at Grande Riviere and Matura Beach
- Sea turtles are vital to ocean health — maintaining seagrass beds, coral reefs, and food webs
- The main threats are bycatch, poaching, coastal development, plastic pollution, and climate change
- Community conservation in T&T — led by organisations like Nature Seekers — is helping to protect turtle populations
- Every one of us can help: by reducing plastic, supporting responsible eco-tourism, and learning about and advocating for sea turtles
A Final Word
There is something deeply moving about standing on a beach at Grande Riviere or Matura in the darkness of a June night, watching a creature older than time haul herself up from the ancient sea to lay her eggs in the sand — the same instinct, the same journey, repeated for 100 million years.
Sea turtles connect us to deep time, to the wonder of the natural world, and to our responsibility as stewards of the oceans. They remind us that Trinidad and Tobago is not just a beautiful place to live — it is one of the most ecologically important places on Earth.
At Homeschool Self Study, we believe that when children fall in love with nature — when they feel the awe of a leatherback returning to the sea, the miracle of hatchlings racing toward the waves — they become the conservationists, scientists, and advocates our planet needs.
Happy World Sea Turtle Day! 🐢🌊
Homeschool Self Study is dedicated to supporting homeschooling families across Trinidad and Tobago with quality resources, activities, and encouragement for primary school learners. Explore more at homeschoolselfstudy.com.
