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Five Facts about the Sea Turtle

Marine Life medium

35th edition of Marine Life monthly post. Marine Life post published every 19th of the month. It aims to share information about the marine life species and to promote their conservation. All images and videos in this post are taken by Indah Susanti unless stated otherwise.

It’s always delightful to see the sea turtles during my scuba diving trip. The above video was taken in Apo Island (the Philippines). The sea turtle is a marine reptile, a reptile that has adapted for aquatic life in a marine environment (source). Adaptation, evolution, the fact is the sea turtles have existed since the prehistoric era. The world’s oldest sea turtle fossil showed the age of 120 million years (in the year 2015’s report). Let me share some of their facts, perhaps you have already known but I do hope you still enjoy their images in this post 🙂


An individual sea turtle is identified from their faces

Yes, that’s how the scientists tell the turtles apart from each other. Just like humans, the turtles have their own individual face. We can observe them through their black plates on their faces (cheek area). The following are two different turtles, on the left was a turtle in Indonesia and the right one was seen in the Philippines. Can you see the differences?


There are seven different species of sea turtles

While they are mostly looked alike, there are actually seven different species of sea turtles. They are the Green, Hawksbill, Kemp’s Ridley, Leatherback, Loggerhead, Olive ridley, and Flatback. All, except Flatback sea turtle, are usually migrate all over the globe.

I think this one is a sea green turtle. The turtle was seen in Indonesia.


The sea turtles migrate up to 10,000 miles per year

They migrate every year for nesting or for jellyfish (food) and then they return to their birth beaches. It is still unknown how the turtles navigate themselves during the migration.

This one was seen in Galapagos Islands.


The sex of the turtle is determined by temperature

The sex of the turtle is determined after the fertilization following the incubation’s temperature (the sands of the beach’ temperature where the lay their eggs). Female hatchlings are more likely when the eggs in the incubation temperature above 31 °C (87.8 °F). Meanwhile, the male hatchlings happened in the cooler incubation temperature. The global warming might have affected the sea turtles population’s gender due to this matter. As the beaches get warmer, there will be more females or, all turtles in the future are going to be females!

Hawkbill sea turtle


The sea turtle eats jellyfish

There are not many jellyfish predators and the sea turtles are among the few. The saddest thing about today’s ocean condition is the high number of man-made plastics products in the ocean as marine debris, and the turtles are unable to distinguish the jellyfish versus the plastic bag. There are some findings of dead sea turtles due to the plastic bags consumption.

Marine debris and human’s (careless) waste management are serious issues that affect our ocean and its residents. A recent research predicted that in the year of 2050, there will be more plastic than fish in our ocean (source). It’s a frightening prediction, noting that 70% of our planet is actually the ocean. Without turtles, jellyfish will take over the ocean as well. I hope we are not too late to prevent it from happening.



Some images in this blog post are for sale in a larger size (4608×3456) (<5MB) without watermark. The images are free for commercial use and editing. The digital file (.JPG) will be sent via email after the order. Please contact me if you have a problem with processing the order. No refund after the JPG file sent.

P1011960 – Sea Turtle


P1012004 – Sea Turtle


PA221613 – Sea Turtle


p6220992 – Sea Turtle



  1. Pertama, saya gagal menemukan perbedaan dari gambar pertama, haha.
    Kedua, infonya sangat bermanfaat. Ada beberapa fakta yang saya baru tahu, seperti jenis kelamin yang dipengaruhi oleh temperatur. Wow!
    Ketiga, tulisan ini informatif, menarik, tapi juga menyedihkan. Saya sudah dan masih terus berusaha untuk mengurangi penggunaan plastik. Namun yang masih sulit adalah mengedukasi orang-orang serumah untuk ikut aware soal ini. Hiks.

    • Memang gak mudah ngebedain muka mereka..saya jg butuh waktu lama lol. Katanya sih para peneliti pakai foto id software gitu jd bisa deteksi penyu yg memang yg balik ke pantai penelitian mereka. Iya soal sampai ini susah bgt buat diberesin. Saya nerangin ke keluarga sih dan intinya memang apa yg dibuang ke laut dan sungai itu gak akan ilang dan terus di laut dan sungai. Terus bisa dimakan ikan dan ikannya dimakan manusia. Ibu saya sampai geli terus sempet gak mau makan ikan lol tp skrg beliau bawa tas belanja sendiri ketimbang pakai kantong plastik baru dr supermarket. Baby

  2. Thanks for this post Mbak. There are so many things that I love about sea turtle. My mentor once told me that the sea turtles always come back to the beach where they were born. And despite the loudness and the bright light in Kuta Bali, the mother sea turtle has to come back to lay eggs. Poor them 😭

    • indeed 😦 it is sad to see the coastal development and how it will affect the life of the sea turtles. Unfortunately not many humans are well informed about this matter and perhaps thats something to share for the sake of the wild life.. fingers crossed!

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