This ghostly octopod was nicknamed Casper when it was spotted by researchers in Papahānaumokuākea Marine National Monument. The NOAA Office of Ocean Exploration and Research team glimpsed this potential new species of octopod at a depth of more than 2.5 miles on the northeast side of Necker Island. Most described species of octopods have two rows of suckers down each arm, but this one has only a single row on each. Even more intriguing is that most deep-sea octopods possess fins that help them navigate in the depths, but this one does not.