I wondered if it weren't something like that. In Florida we had something like that that we called a "glass snake". They would break really easily and regrow the tail when it broke off. They are a favorite food of eastern diamondback rattle snakes. I wonder if it is the same thing.
EDIT: this came from the University of Florida website:
"There are four species of glass lizards found in Florida, all belonging to the scientific genus Ophisaurus. ... Glass lizards are legless, and their long tails give them a very snake-like appearance."
It's about time here to start watching for our kind of "blind snakes" . Every year about July or August here in the SE US the snakes go through a molt. (most snakes more often than once a year) Their skin loosens and then sheds the top layer. During this time they have diminished eyesight and become more aggressive/defensive. It's also the time of year when people are outdoors and active. So it is that time of year when we have the most snake bites. Usually copperheads in our neck of the woods. That time of year when the children complain about having to wear shoes more often. hahaha
Luke found a juvenile eastern indigo snake a couple weeks ago. It's the first time I ever saw one this far north. They are endangered, eat venomous snakes, and are the largest north american snake. My brother and I caught and kept a 7'7" one as a pet when we were boys. They were thought extinct in ALabama since 1950's but Auburn University has reintroduced them in last few years. Sad to say, the one Luke found was killed by a car. But my wife sure got a surprise when she opened the freezer to find it in there. Luke was saving it to skin later. I'm surprised she didn't beat him. LOL
I wish everyone wouldn't kill every snake they see.
I too am intrigued by the pics of Sweden.