Skimmer cup discovery

[Dearth]

So tonight I was cleaning out my skimmer cup and found this delightful creature in the cup I have zero idea how he got in there but it freaked me out because I was not expecting it and I clean my cup every 4 days. I have had numerous snails but never this in there before

So it begs the question what have you found in your skimmer cup in the past that you weren't expecting?