http://www.slate.com/articles/video/video/2015/08/rare_nautilus_video_living_fossil_species_spotted_for_first_time_in_three.html

A rare species of nautilus, not seen in three decades, was spotted recently off of Papua New Guinea. University of Washington biologist Peter Ward last saw the elusive variation, which has a thick, hairy, slimy covering on its shell, back in 1984. Returning to the same reef to study nautilus populations this past August, Ward again caught sight of the rare nautilus.