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The Turtles Portal (Wikipedia)
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turtle : any of an order (Testudines synonym Chelonia) of terrestrial, freshwater, and marine reptiles that have a toothless horny beak and a shell of bony dermal plates usually covered with horny shields enclosing the trunk and into which the head, limbs, and tail usually may be withdrawn — Webster
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Turtles are reptiles of the order Testudines (or Chelonii) characterised by a special bony or cartilaginous shell developed from their ribs and acting as a shield. The order Testudines includes both extant (living) and extinct species. The earliest known members of this group date from 157 million years ago, making turtles one of the oldest reptile groups and a more ancient group than snakes or crocodilians. Of the 327 known species alive today, some are highly endangered.
Turtles are ectotherms—animals commonly called cold-blooded—meaning that their internal temperature varies according to the ambient environment. However, because of their high metabolic rate, leatherback sea turtles have a body temperature that is noticeably higher than that of the surrounding water.
Turtles are classified as amniotes, along with other reptiles, birds, and mammals. Like other amniotes, turtles breathe air and do not lay eggs underwater, although many species live in or around water. — Wikipedia
Introduction
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Swimming with turtles at Sipadan, Borneo (Tim Ecott, Wonderlust)
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How Do Sea Turtles Find the Exact Beach Where They Were Born? (Carrie Arnold, National Geographic)
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The survival of the sea turtle (Scott Gass, TED-Ed)
Information About Sea Turtles, Their Habitats and Threats to Their Survival (Sea Turtle Conservancy)
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Kemp’s Ridley Sea Turtle (Sea Turtle Conservancy)
Kemp’s Ridley Sea Turtle (Wikipedia)
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An ancestral turtle from the Late Triassic of southwestern China (Chun Li, et al., Nature)
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Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
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Immense Pacific coral reef survey shows green sea...
on April 24, 2019 at 6:00 pm
Densities of endangered green turtles are increasing in Pacific coral reefs, according to the first comprehensive in-water survey of turtle populations in the Pacific. The study, by Sarah Becker of the Monterey Bay Aquarium in California and colleagues, publishes April 24 in the open-access journal PLOS ONE. […]
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Greek researchers enlist EU satellite against...
on April 22, 2019 at 7:06 am
Knee-deep in water on a picture-postcard Lesbos island beach, a team of Greek university students gently deposits a wall-sized PVC frame on the surface before divers moor it at sea. […]
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The high price endangered animals pay for charisma
on April 16, 2019 at 2:30 pm
"Wanted: beautiful, intelligent companion well-versed in the art of conversation." It's a familiar story, but don't expect a fairy-tale ending. In this instance, we're talking about a transaction that condemns one of the protagonists to life imprisonment in a cage – or an untimely death in transit at the hands of traffickers. Not exactly a match made in heaven. […]
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Seals, caviar and oil: Caspian Sea faces...
on April 16, 2019 at 7:27 am
Seals waddling along the waterfront were once a common sight in Baku Bay, the Caspian Sea home of Azerbaijan's capital. […]
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Sharks more vulnerable than originally thought
on April 15, 2019 at 1:40 pm
A study of small-scale fisheries operating from Kenya, Zanzibar and Madagascar, has revealed the massive underreporting of sharks and rays caught annually in the region. […]