A whale has reportedly been spotted off the Danish island of Anholt, with the local   Danish Environmental Protection Agency believing it has been dead for some time, according to Danish media. The animal is believed to be a stranded humpback some 10 to 15 meters (about 33 to 50 feet) long, Danish media reported, inviting speculation over whether it could be Timmy the humpback whale. It was sighted about 75 meters off the coast of Anholt. Officials said they plan to retrieve the whale on Friday.  For weeks, Timmy kept getting himself stranded off the German coast after many successful attempts to set him free, until a final rescue mission guided him to the North Sea . Stranded whale rescue underway in Germany To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video What do we know about Timmy the whale?…