You might be surprised to learn that this beautiful sea critter (also known as a sea swallow or blue dragon) is actually a sea slug. The blue and silvery mollusk is known to feed off cnidarians like the venomous Portuguese Man o' War. What makes these gorgeous slugs even more fascinating is their practice of storing the cnidarians's stinging nematocysts within its own tissues — ensuring a painful sting to anyone who messes with it.
If this is all an accident of the lighting and their shitty cell-phone cameras, then it was a lucky damned accident, considering they were specifically there to hunt ghosts in what they thought was a haunted abandoned building. If they doctored the video with effects later, then this is a remarkably subtle job. These are giggling teenagers goofing around, and we're pretty sure they gave us a creepier ghost effect than any of the Paranormal Activity movies. So good job, guys -- you successfully creeped us out, one way or another.
A self-described ghost hunter from Texas who has worked with dozen of other investigators, Alejandro Dominguez is the main man behind this YouTube-based paranormal investigation series. Dominguez cites a ghostly encounter at the age of five as the inspiration for his interest in the afterlife. As a result, every first and third Tuesday of the month, he and his team of ghostbusters search for the dead in super-creepy locales. Fully shot by Dominguez, the videos allegedly capture apparitions and unexplained activity in places like abandoned schools and the Waverly Hills Sanatorium.