Nature » Turtle http://www.pbs.org/wnet/nature The premiere natural history program on television. Thu, 24 May 2012 20:49:13 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 Voyage of the Lonely Turtle: Introduction http://www.pbs.org/wnet/nature/episodes/voyage-of-the-lonely-turtle/introduction/2503/ http://www.pbs.org/wnet/nature/episodes/voyage-of-the-lonely-turtle/introduction/2503/#comments Mon, 10 May 2010 13:34:58 +0000 admin http://www.pbs.org/wnet/nature/2008/09/22/introduction-13/ A solitary loggerhead turtle in the middle of a vast ocean may not sound like an adventure film, but stick with her. Along her 9,000-mile voyage to nest, our loggerhead tour guide in Voyage of the Lonely Turtle encounters hammerhead sharks, deep ocean tempests, and man-made death traps in the form of fishing nets and hooks. Her body of well-suited armor and specialized adaptations for deep-ocean dwelling will help the sea turtle evade many of the ocean’s menaces. But this is just one set of challenges to overcome. Here is another: she must find her way across the Pacific, from Mexico to a small stretch of beach in Japan, a precise location that she has been to just once before, as a two-inch hatchling, decades ago.

Researchers have learned a great deal about how this curious creature could make such a phenomenal voyage. Some of the most valuable information was gained from a single voyage. Scientist Wallace J. Nichols released the captive loggerhead turtle, Adelita, into the Pacific a decade ago. Over the course of a year, Adelita did what no sea turtle had ever done before, she took researchers and turtle enthusiasts along on her journey, to her beach, to nest. Since then, researchers have shed much light on how sea turtles like loggerheads navigate the astounding trip. One of the more fascinating aspects of this navigation is the turtle’s use of magnetic mapping to chart its course.

To order a copy of Voyage of the Lonely Turtle, please visit the NATURE Shop.

Online content for Voyage of the Lonely Turtle was originally posted April 2007.

]]> http://www.pbs.org/wnet/nature/episodes/voyage-of-the-lonely-turtle/introduction/2503/feed/ 83 The Loneliest Animals: Introduction http://www.pbs.org/wnet/nature/episodes/the-loneliest-animals/introduction/4898/ http://www.pbs.org/wnet/nature/episodes/the-loneliest-animals/introduction/4898/#comments Mon, 15 Feb 2010 00:27:51 +0000 tanner vea http://www.pbs.org/wnet/nature/?p=4898 Around the globe, unique and fascinating species face extinction from hunting and habitat destruction, which affects vulnerable animals in every kind of environment.  Biologists, conservationists, wildlife preservation centers and zoological parks work to breed and shelter rare and critically endangered animals when and where they can, but many species are down to the last few individuals and face an increasingly uncertain future.  For some, however, the future is all too clear.  Lonesome George, a Pinta Island tortoise from the Galapagos Islands, is the very last of his kind.  For centuries, until they were believed to be extinct, his species kept sailors and pirates well-fed on the high seas.  George alone survived.  But when George dies, millions of years of evolution will come to an end.  Other species, like Spix’s macaws, lemurs, Iberian lynxes, rhinos, black-footed ferrets and Chinese rafetus turtles, were well on their way to joining George as the loneliest animals in the world until help arrived, providing hope for a better outcome.

Each species in trouble presents unique challenges, including inbreeding and lack of genetic diversity, sibling rivalry on an extreme scale, and individuals who may never have seen another of their kind.  There are some successes with captive breeding.  For example, the black-footed ferret, once thought to be entirely extinct, is now being reintroduced to its natural home on the American plains after an incredible intervention by scientists.  But rebounding in artificial settings doesn’t put endangered animals in the clear – populations may grow, but without successful action to preserve and maintain their wild habitats, they may be confined to laboratories and sanctuaries forever.

The Loneliest Animals follows the plight of these incredible, charismatic creatures and the struggles of the dedicated conservationists who fight for them.

The Loneliest Animals premiered April 19, 2008 on PBS (check local listings).

]]> http://www.pbs.org/wnet/nature/episodes/the-loneliest-animals/introduction/4898/feed/ 31 The Reptiles: Turtles and Tortoises: Introduction http://www.pbs.org/wnet/nature/episodes/the-reptiles-turtles-and-tortoises/introduction/3328/ http://www.pbs.org/wnet/nature/episodes/the-reptiles-turtles-and-tortoises/introduction/3328/#comments Sun, 16 Feb 2003 15:19:55 +0000 admin http://www.pbs.org/wnet/nature/2008/10/16/overview-7/

NATURE’s The Reptiles: Turtles and Tortoises takes a close look at ancient creatures marching slowly through the millennia.

A turtle’s shell is among the most peculiar but successful pieces of design in the natural world. Unchanged for 200 million years, it has allowed the various species of turtles to populate almost everywhere in the world. But the limitations of life in a shell are causing turtles problems in today’s world. Over exploitation by humans has caused many turtle species to become extinct or endangered. This episode introduces some inspirational people who are trying to help them.

To order a copy of The Reptiles: Turtles and Tortoises, please visit the NATURE Shop.

Online content for The Reptiles: Turtles and Tortoises was originally posted February 2003.

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