It's a regular pool with a deep end full of worms, about an inch deep, all dead. So, okay, I was googling how to empty an indoor pool bc it wouldn't be like a bathtub where you just pull a plug and it all drains, you need to pump the water out so you can clean it, and a lot of the scum you have to clean is algae and there's these neat little worms called bloodworms you find in pools sometimes that feed off the algae. Dynamo scoops up a cup full of bloodworms.