Peter Douglas Ward is a Paleontologist, and Paleontologist is the scientific study of prehistoric life. It includes the study of fossils to determine organisms' evolution and environments (their paleocology). Chambered Nautilus is one of the prehistoric animal, they are consider Cephalopods like octopuses and squids, the species has about 90 tentacles.
Peter Ward and Gregory Barord did a project in American Samoa with a collaborative effort from NOAA and the Department of Marine and Wildlife Resources. They drop a camera attached to traps with chicken as baits and they found 4 nautilus in total for their scientific purposes. Peter and assisting scientists weigh, measure the length, the width and got an x ray photo of each nautilus that they found half a mile off the Tafuna International Airport.