What I was trying to communicate was that Wikipedia has plenty of photographs that illustrate various concepts. This is a photo that displays typical turtle behaviour, which I didn't think I implied that I was unaware of and I don't know how you came to that conclusion. Anyway, it's the sort of photo you wouldn't need to include in an article but it clearly is suitable for the purpose.
I did post this picture and all of the rambling while drunk and I'm having a bit of a mild anxiety breakdown right now and I just don't know what I was saying. I'm terribly ashamed of posting this if this caused anyone any confusion.