The leatherback sea turtle—the world’s largest turtle and the only member of the genus Dermochelys—received good news today. In an update of the IUCN Red List, the leatherback sea turtle (Dermochelys coriacea) has been moved from Critically Endangered to Vulnerable. However, conservationists warn that the species still remains hugely endangered—and in rapid decline—in many parts of its range.
‘Third eye’ helps sea turtles sense changes in seasons
Each summer, leatherback sea turtles (Dermochelys coriacea) migrate thousands of kilometers from their tropical breeding grounds to feed in cooler waters. Yet how the animals know when to begin their long journey back south at the end of the season has mostly remained a mystery. New findings, to be published in an upcoming issue of the Journal of Experimental Marine Biology and Ecology, suggest that leatherback sea turtles may be able to sense seasonal changes in sunlight by means of an unpigmented spot on the crown of their head—known as the pink spot (pictured). Researchers conducted an examination of the anatomical structures beneath the pink spot and found that the layers of bone and cartilage were remarkably thinner than in other areas of the skull. This thin region of the skull allows the passage of light through to an area of the brain, called the pineal gland, that acts as biological clock, regulating night-day cycles and seasonal patterns of behavior. The authors suggest that the lack of pigment in the crowning pink spot and thin skull region underlying it act as a “skylight,” allowing the turtles to sense the subtle changes in sunlight that accompany changing seasons, signaling them to return south when autumn approaches.
no! isnt a leatherback turtle (Dermochelys coriacea) eating a inflatable toy, just a delicious pyrosome, a free-floating colony of hundreds of thousands of tiny tunicates (filter-feeding zooids) wrapped in a gelatinous pink tunic.At Island of Pico, The Azores, Portugal.
So I currently work patrolling the beaches of Barbados, surveying sea turtle activity. Recently excavated a hatched leatherback nest (these nests are massive - generally around a meter deep) and a few hatchlings hadn’t reached the surface yet. Most were dead but there were 3 live ones. We rescued them so we could release them when it got dark. They are so cute; look at those massive front flippers.
Not having a rigid carapace like other turtles, the shape of Leatherbacks can change dramatically in feeding grounds (top) and in nesting grounds (bottom) due to deposits of blubber on the neck and the area around the limbs.
Leatherback turtles, scientifically known as Dermochelys coriacea were given the name for their unique, tough, leathery shell made up of thousands of tiny bone plates. These turtles can weigh up to about 500kg!
Leatherback Sea Turtle (Dermochelys coriacea) by hvilorio Leatherback Sea Turtle Hatchling making his way out to sea, the beginning of a journey and life… It’s amazing how these little turtles grow up to become almost 2,000 pounds, and even more amazing is how they know what to do once they are born… How great is our GOD!!!
Romans 1:20 (HCSB)
For His invisible attributes, that is, His eternal power and divine nature, have been clearly seen since the creation of the world, being understood through what He has made. As a result, people are without excuse.
Tortuga Tinglar recién nacida en su partida a aguas profundas, el principio de su vida y su viaje por el mar… Es impresionante como estas pequeñas tortugas crecen hasta pesar casi 2,000 lbs, y aún mas maravilloso como saben que hacer cuando nacen… Cuan grande es nuestro DIOS!!!
Romanos 1:20 (RVR1960)
Porque las cosas invisibles de él, su eterno poder y deidad, se hacen claramente visibles desde la creación del mundo, siendo entendidas por medio de las cosas hechas, de modo que no tienen excusa.