What type of animal is the Loch Ness Monster?

The Loch Ness Monster, AKA. "Nessie", is a fictional creature. There is no proof that she does exist although there have been many hoaxes. These hoaxes range from plastic swans and fake radar images. There are reports of sonar images having picked up on a large shape ("Nessie") followed closely by a much smaller shape (possibly a baby "Nessie").

Unfortunately, "Nessie" is a mythical type of animal. In other Words, she does not exist.

Just because something is mythical does not mean it does not exist.