Aurora must have walked past this swamp a million times... but she'd always just accepted it as part of Hogwarts and hadn't bother to question its existence. She hadn't even thought much about it being there, or how it worked. It was just... there.

She stood there, looking at it curiously. She'd assumed it was just a bit of magic, but if they were here on an eco-systems lesson maybe it was more than that. "Professor? Is there anything living in there? I thought it was just created from magic or something..."

HOLD UP.

"Is it possible to create whole eco-systems with magic?" Because that would be AWESOME.