This is not our pool. It looks a lot like it, but it's not. It was, however, one Florida family's Memorial Day experience, and I could probably crop the photo in a way that would give our grandkids a thrill. (Photo from the Sarasota County (FL) Sheriff's Office Facebook page.)
Theoretically, this could happen here, but it's more likely to be a bear that breaks through our screen. The worst we've had so far has been a rat, and we didn't need professional trappers to "relocate" it.