The Grinch who Stole Sentry

The deep-sea exploration vehicle called Sentry has been festooned with decorations and “faces” over the years, often thanks to WHOI engineer Justin Fujii whose artistic medium is electrical tape. Sentry is an autonomous underwater vehicle that can dive to 3.7 miles below the surface on missions to explore our ocean. Equipped with sonar and sensor systems, it has helped scientists map the seafloor, track the Deepwater Horizon oil spill, and locate the sunken El Faro cargo ship. It completed its 500th dive on Oct. 16, 2018, off the Pacific Coast of Costa Rica. The scientists, engineers, ship crews, and staff at Woods Hole Oceanographic Institution wish you happy holidays! (Photo by Ken Kostel, Woods Hole Oceanographic Institution)