Here’s what you’ll learn when you read this story:During a robotic exploration of the the ocean’s abyssopelagic zone, scientists discovered never-before-seen, jet-black eggs attached to a rock. After further study and DNA examination, the team discovered that the eggs belong to a flatworm—an animal usually associated with more shallow waters—previously unknown to science. Any biological discovery in this zone is immensely important, as the life cycles of creatures living there are largely unknown. In fact, the deepest flatworm observed before this discovery we found at around 5,200 meters (3.23 miles). Before that discovery, the deepest flatworm ever discovered were found at only around 2 miles, according to ScienceAlert .