This 'Glowing' Sea Turtle Is The World's First Known Biofluorescent Reptile

By on

CCSS NAS-3 Word Search
Photo Credit: via David Gruber

When the team of marine biologists led by David Gruber of the City University of New York headed to Solomon Islands in the South Pacific in late July, they were hoping to film some biofluorescent sharks and coral reefs. What they had never expected to find was the world's first-known biofluorescent reptile.

Gruber, who released the video and images of the 'glowing' turtle on September 28, says the encounter happened during a night swim. The researchers were in the middle of filming when they suddenly noticed a beautiful fluorescent turtle that resembled an "alien (space)craft with a patchwork of neon green and red all over its head and body."

Image Credit;

Identified as the hawksbill sea turtle, it is the first known reptile to exhibit biofluorescence - the ability to absorb light, transform it and then emit it as a different color. This is different from bioluminescent animals that produce their own light through unique chemical reactions or by hosting light-transmitting bacteria.

While researchers have recently discovered some biofluorescent fish, sharks, rays and even tiny crustaceans, they had never seen a marine reptile with the capability. According to Gruber, the ocean provides the perfect environment to evolve these kinds of fluorescent molecules. The researcher says "The ocean absorbs almost every other color except for blue -- so these animals have been creating ways to take in that blue light and transform into other colors." The most common transformations are green, red and orange.

Photo Credit:

Gruber says he followed the beautiful reptile for a few minutes before it disappeared into the deep dark depths of the ocean. While the team did not encounter any more hawksbill sea turtles in the water, they did get an opportunity to examine a few captive specimens up close and observe them turning red.

The marine biologist says this discovery has left him with more questions than answers. He wants to know if the turtle can see its own glow. He is also curious if the biofluorescence is caused by certain chemical compounds in the reptile's diet or if the marine animal has the capability of producing the compounds on its own.

Researchers are not sure why the hawksbill sea turtle and other marine animals have developed this skill. They speculate that it could be a defense mechanism or a clever way to find and attract prey. In some cases, it could also be a way to communicate.

Photo Credit: via David Gruber

Alexander Gao, director of the Eastern Pacific Hawksbill Initiative, who has been studying the turtles for many years, believes in the turtle's case it may be a kind of camouflage.

Unfortunately, the team will not be able to research the hawksbill sea turtle to help solve the mysteries. That's because the gorgeous reptiles that have been incessantly hunted down for their decorative shells are currently on the critically endangered list. Gruber says that instead, he will try to get the answers from the marine reptile's closest relative, the green sea turtle, that also happens to be endangered, just not critically!


Generate citations in MLA, APA & Chicago formats for this article.

VocabularyPlay Game


Reading Comprehension (3 questions)

  1. Why did David Gruber and his team go to the Solomon Islands in the South Pacific?
  2. What was their surprising find?

Critical Thinking Challenge

Can you think of one way in which bioluminescence helps marine...

Vocabulary in Context

“Gruber says that instead, he will try to get the answers from the marine reptile's closest relative, the green sea turtle, that also happens to be endangered, just not critically!”...

to use your custom avatar.
  • gamb
    gambThursday, August 17, 2017 at 12:26 pm
    I like it to much lol πŸ˜‚πŸ˜‚πŸ˜‚πŸ˜‚πŸ˜‚πŸ˜‚πŸ˜‚πŸ˜‚πŸ˜‚πŸ˜‚
    • Die potatoThursday, August 17, 2017 at 12:06 pm
      I like turtles
      • Die potatoThursday, August 17, 2017 at 12:06 pm
        Cool so cool
        • katieboops
          katieboopsTuesday, August 1, 2017 at 8:06 am
          so cool
          • l.strikeWednesday, July 5, 2017 at 4:56 pm
            • i dont knowTuesday, June 27, 2017 at 7:40 pm
              its interesting!!
              • spanishangle227Friday, May 19, 2017 at 9:13 am
                i like this i want to glow in the dark
                • ashspikachu03
                  ashspikachu03Tuesday, May 9, 2017 at 11:23 am
                  I LIKE TURTLES
                  • smreynolds
                    smreynoldsTuesday, May 2, 2017 at 7:31 am
                    I LIKE TURTLES XD i love this article so much and it just blows my mins
                    • JoaquinFriday, April 28, 2017 at 11:05 am

                      Recent Comments

                      dill wrote:

                      that is so sad i feel bad
                      Thailand's Famous Macaque "Uncle...

                      baebyface123 wrote:

                      Spinach Leaf Transformed Into Be...

                      damarionHardimn wrote:

                      all right
                      Apple's iPhone X Raises The Bar ...

                      Our Apps and Plugins