problem

so I wen to check my wine in the garage (first racking after secondary fermentation) it’s been aging for a couple of weeks now. Today I noticed an oily sheen on my wine and it looked like the level had dropped a half inch from where it WAS when I racked it off. I have been checking it every...

I need help identifying the culprit of this problem. The plant posted in the picture below was over 8 in long and i went out to tie him this afternoon and he was gone! What could possibly cause this?