Time again for our Website of the Week, when we showcase interesting and innovative online destinations. Our web guide is VOA's Art Chimes. 

For almost two decades, scientists have been studying a decline in frogs and other amphibians.

For the past eight years they've been able to monitor the global situation online with a resource that can help introduce you to these cold-blooded vertebrates that live both on land and in the water.

"AmphibiaWeb is a website that was motivated by the current decline in amphibians around the world," says University of California biology professor David Wake, the director of AmphibiaWeb.org.

"What we want to do is provide general biology about of the species, maps of their distributions, photographs, etc. We wanted to simply make a one-stop shopping place for all information about amphibians, and to do it all free of charge."

The site includes an extensive database with very detailed information about more than 6,000 species of frogs, salamanders, and others. There's technical information for biologists and other specialists, but if you're just curious you can browse by country, to learn about your native amphibians, and see many delightful pictures showing them in their natural habitat.

"The photos are something that we're specially proud of, and that's something that's used very heavily. We have at present time 12,717 photographs, and that is one of the most popular features of the AmphibiaWeb site," said Wake.

There are also audio recordings, such as one of Bufo Maculatus, also known as the flat-backed toad, which is found throughout central and southern Africa.

All amphibians, all the time, at Amphibiaweb.org, or get the link to this and more than 200 other Websites of the Week from our site, voanews.com.