Scientists accidentally took a video of the elusive oarfish. This video is the best quality and longest video that has ever been shot of an oarfish in its natural habitat. This video also appears to show a parasitic isopod attached to the fish’s dorsal fin. The mysterious oarfish lives about a mile deep in the ocean and it can grow to be 50ft long. Oarfish look like giant eels, with their head pointing toward the surface and the rest of their body hanging down below. The oarfish is also believed to be the largest bony fish in existence. The one in this video is only eight feet long. This video was shot while researchers were investigating the BP oil spill in the Gulf of Mexico. A camera was sent down to look at the oil pipes and figure out how to fix them. However, the camera stumbled upon this oarfish.