August 31, 2026 — For the past 3 years, our Habitat Camera (HabCam) Survey has had self-propelled underwater helpers. From June 30 to July 6 of this year, two Tethys-class long-range autonomous underwater vehicles, or LRAUVs, surveyed more than 200 nautical miles of pre-programmed track lines in the Mid-Atlantic. Together, they captured more than 68,000 images of the seafloor, collecting critical data used in fisheries stock assessments.
LRAUVs provide an alternative way to survey areas of the ocean where traditional research vessels cannot go because of offshore development. The data they collect complements our vessel-based HabCam Survey, which collects millions of seafloor images each year to understand Atlantic sea scallop populations.
Technology Strengthens the Sea Scallop Assessment
Our scientists identified sea scallops, fish, crabs, snake eels, squid, skates, and more in the seafloor images taken by LRAUVs this year. They will present these data, along with HabCam Survey data, to the New England Fishery Management Council at the end of August. The Council’s Scallop Plan Development Team will incorporate the data into the Atlantic sea scallop assessment. Ultimately, the data help generate more accurate estimates of sea scallop abundance and distribution to inform management decisions.
Advanced Technology Specialist Cameron Fairclough notes that this technology expands where and when we can collect data. “This autonomous underwater vehicle can image the seafloor and you can control it from your phone while it’s out in the middle of the ocean,” he explained.