I found this in my defrost drain tub. What is it?

I was defrosting my refrigerator and found drain tub was filled with water is it normal ? and also i found this in tub. What is it? Is it some part of my refrigerator that fell off ? I can't find a place where it should belong. https://preview.redd.it/uwzntt54x4971.jpg?width=780&format=pjpg&auto=webp&s=4353b92fc4bde2fbb66b3eaa90538b9fba5e7b5f submitted by /u/AccomplishedAd6215 [link] [comments]