I firmly believe that this pond is a time travel device:

Space invader pond

The proof is in this recording I made1. At minimum, clearly there is some sort of quantum entanglement with computer games from the 70s going on.

1. Folks may want to use this recording in free software. To the extent possible under law, I have waived all copyright and related or neighboring rights to this work. The frogs have too. An email or a link to this page would be appreciated though.