 OK, we've got one fruit fly so far. Ooh, what's that? Oh, it's a spider. Gosh, there's so many things when you look closely. Oh, look, under here, there was... Oh, it flew away. Oh. Classic fly. Classic fly. This is Crowd Science from the BBC World Service. I'm Caroline Steele, and the reason Jenny and I are on an insect safari in a caravan park where she and her partner Kai live is because they've thought of a question for us.