At least some content in this article is derived from information featured in Fantastic Beasts: Cases from the Wizarding World. Spoilers will be present within the article.
She left it in the lakeside grotto when she dove into the lake to try and see the creature. Mathilda Grimblehawk's partner later found the camera and magically repaired it. It was sent to Myra Curio in the Muggle Liaison Office (who called it "fascinating, even though the photos do look a bit… static") for analysis. She only managed to recover a single photograph, of a pale, green tentacle.