09/11/2026
Oyster farms don’t alter sea otter fodder 🦦
To you and I, farmed oysters are a delicacy. But for sea otters, oyster farms may not be a big deal.
That’s one finding of a team of scientists led by Brenda Konar, a marine researcher at the University of Alaska Fairbanks, and including Alaska Sea Grant-supported UAF graduate student Riley O’Neil. The researchers partnered with shellfish growers to study how their farms might impact the seafloor of Kachemak Bay, which is a breeding ground for sea otter prey like sea stars, crab, and clams. 🦀
“We wanted to determine if the prey was similar underneath a farm versus other places,” Konar said. “Are farms good places to hang out because there is a lot of food, or better food?” 🤔
The project is part of the Mariculture Research and Restoration Consortium (MarReCon), a long-term program funded by the Exxon Valdez Oil Spill Trustee Council to understand broad ecosystem interactions with mariculture farms. It builds on previous Alaska Sea Grant-funded research by Konar, which found that sea otters that forage on the seafloor in the vicinity of oyster farms share similar feeding habits as those distant from the farms. These findings led researchers to a followup question: do oyster farms change the communities of animals living beneath them? 🦪
"We're looking at how oyster farms may influence the benthic environment, specifically the communities of kelp and invertebrates that live there," said O’Neil. "The oysters, or even the organisms growing on the gear, produce organic material that falls to the seafloor. That could provide extra food for sea otter prey. But if too much accumulates it can also reduce oxygen in the sediments and make it harder for many bottom-dwelling organisms to survive." 🌊
Read the full research highlight on our website 🔗 linked below. alaskaseagrant.org > News
🔗: https://alaskaseagrant.org/2026/09/oyster-farms-dont-alter-sea-otter-fodder/