Are these just Blue Legs? We call them Hide and Seek, because our two year old was annoyed that he couldn't always find them. Hide barely ever turns up. Seek traded up to a much bigger shell about an hour after I chucked some in the tank. He's a show-off (or she?). Sorry, the picture of hide isn't great, I had to shoot it through the galss at an angle, and that's gross. Like I said, though, Hide rarely comes out.