Sandy is trying to mate with his fake turtle!!!!!
This fake turtle has always been with him since he was the size of a loonie. He used to always do the 'mating dance' with it but now. . . I think he's actually mating with her. . .
Here is a video of him: http://youtu.be/NjlxcxWhU2M
How big is your turtle? 5.5 inches
How long have you had it? Since it was a baby
What is the water temperature? 72 Celcius
Did you use a thermometer? Yes
Are you using a water heater? No
How much water is in there? 6 inches
Are you using a water conditioner? No
Are you using any filtration? No (Just cleaned it yesterday, though. The water is clear as day)
What is the basking temperature? I don't know. . .
Is there a basking light? Sometimes (I rotate one basking light between my turtles)
Is there a basking platform that is easy to climb on? Yes
What kind is it or what is it made out of? Flat-ish rocks
Is there a UVB light? Sometimes
What have you been trying to feed it? ReptoMin and some veggies
When was the last time your turtle ate? Yesterday (I feed him every second day)
How big is the tank/pond/enclosure? 30 gallons (Soon upgrading)
Is the tank near a window? No
Is the tank in a room with a lot of activity? No
Have you read the Basic Care section? Yes
Have you searched the forums for similar situations? Yeah
Is there any other unusual activity/symptoms? MATING WITH A PIECE OF PLASTIC

