The unexpected discovery was first made seven years ago by a student researcher, who spotted the teeny sea slug during a diving trip.
What makes the find even more remarkable, is the fact that weather conditions make diving in the waters where the creature was observed only possible for about four months of the year.
A team from the National Taiwan Ocean University, National Museum of Natural Science and National Taipei University of Education got to work to try and identify the unusual creature.
As a result, it took scientists a bit of time to be able to confirm that it was indeed a completely new species of sea slug.