October 2, 2020 — The following was released by NOAA Fisheries:
The underwater video scene is full of life. A school of sinewy fish darts across the screen while a crab rummages along the seafloor. A flatfish, camouflaged like the sandy bottom, doesn’t seem to mind when the crab crawls over its back to approach an oyster.
Scientists from NOAA Fisheries’ Northwest Fisheries Science Center are collecting this video and more like it. They want to assess how marine life uses, and may even benefit from, habitat in and around farms growing oysters and other shellfish. They are teaming up with Microsoft to use computers and artificial intelligence to scan hours of video within seconds for different species of interest.
This particular video reveals the underwater landscape of Hama Hama shellfish farm in Hood Canal, Washington, one of many partners assisting with the study. Other local shellfish growers and the Pacific Shellfish Institute are also taking part.
“We collected the video as one way to assess how fish and invertebrates use shellfish aquaculture habitats compared to areas of the nearshore that don’t have aquaculture,” said Beth Sanderson, a Northwest Fisheries Science Center research scientist. Researchers collected the video over the past several years to assess the way species use, and feed in, different habitat types.
Shellfish farming is one of the most valuable parts of the Northwest aquaculture industry. It generated close to $100 million annually for the regional economy and provides close to 1,500 jobs prior to the pandemic. Shellfish farms occupy more than 25,000 acres in the Northwest. Researchers and managers want to understand how farming practices affect marine life in the shallow and highly productive nearshore waters where oysters and other shellfish grow.
“We’ve seen basically all of the fish you’d expect in the nearshore—herring and other forage fish, varieties of perch and sculpin, juvenile salmon, along with diving ducks, harbor seals and more,” Sanderson said. “There’s an amazing variety of life in the shallows of the Pacific Northwest, and we are seeing for the first time how many of these species use habitats within and near shellfish farms.”