The slate stickers "endangered species" are printed on a medium not containing petroleum derivatives (the biopolymer-based potato starch).
The survival of the Greek tortoise is threatened by fire and by construction of roads through forests, which increases the number turtles crushed by vehicles.
The trade of turtles is now banned in European Union countries, but has not disappeared in North Africa were tens of thousands of Greek turtles are sold to tourists every year.