June 18, 2019 — The loss of the NOAA Northeast Fisheries Science Center “HabCam” (short for Habitat Mapping Camera) during a recent scallop survey has raised concerns from some groups about the transparency of the survey process.
The sea scallop survey of the U.S. Northeast scallop fishery performed by the Northeast Fisheries Science Center uses a combination of dredging and the HabCam to determine the densities of scallops at survey stations in the areas that are typically fished. Data from both the camera and the dredge, as well as data from a number of other surveys performed by colleges and other institutions, are used to create a model that the various government organizations managing the resource – including the New England Fisheries Management Council (NEFMC) – use to set quotas for the coming year.
The HabCam is towed behind the research vessel on a long tether and is used to take detailed photos of the sea floor in order to get ideas on how dense and mature the scallop population is. According to the science center, during a survey of the Great South Channel on 6 June the HabCam struck an uncharted object in 130 feet of water, severing the tow cable.
“The weak link in the tow cable broke, as intended when tension is too great,” the science center wrote in a release. “This limits damage to both the instrument and the ship’s tow winch. The HabCam was separated from the ship, but a sound-emitting locator attached to it signaled its location.”