August 24, 2023 — The following is an excerpt from an article published by Sustainable Fisheries UW:
Ropeless, also called “on-demand” fishing gear aims to reduce vertical lines in the water column for trap fisheries like lobster. These innovations have become a key component of ongoing fishery management efforts to minimize interactions with whales. We have reported on those interactions before, but we have not covered the gear innovations that may provide hope for critically endangered North Atlantic right whales while allowing fixed-gear fishermen and women to stay on the water. In this post, we will review the problems that ropeless fishing gear may solve, summarize the latest technology, and project what it might mean for the future of fixed gear fisheries.
The race to produce ropeless fishing gear has been sparked by the dire circumstances of North Atlantic right whales. With only about 340 left (approximately 80 are spawning females), just one unusual mortality event per year risks the species’ future—and fishing gear has been implicated in at least nine and up to 27 deaths since 2017 (ship strikes have been responsible for at least 11 deaths).
Traditional lobster gear uses metal cages called traps or pots. They are deployed into the water with a buoy attached to a rope, which hangs vertically in the water column until the trap is collected. Whales can entangle themselves if they swim through areas with ropes in the water. The entanglement and extra weight eventually wear them out, and they drown. Maine reported nearly 3 million trap tags in 2018, and Canada estimates 3,000 trap licenses are active each year with each license holder able to deploy up to about 300 traps. While not every single trap is attached to a vertical line, that still puts an incredible amount of hazardous ropes into the Northwest Atlantic Ocean. Those lines can be a deadly hazard for marine mammals, especially the North Atlantic right whale.
NOAA estimates that over 85 percent of right whales have been entangled in fishing gear at least once. But Maine has not reported a single right whale entanglement in its lobster fishery since 2004, and recent events suggest right whales are at greater risk farther north in Canada. Conservationists and lobstermen and women have disagreed on the best available right whale science for years.
SFUW first reported on this conflict in 2020 and warned of complicated market reactions if sustainability ratings and certifications changed for American lobster fisheries in the U.S. or Canada based on right whale threats. Sure enough, in September 2022, Seafood Watch downgraded all American lobster fisheries in both countries to red, “Avoid.” In December 2022, the Marine Stewardship Council (MSC) suspended the Gulf of Maine lobster fishery’s certification because a federal judge ruled that lobster fisheries violated the Endangered Species Act (ESA).
Two recent reports have given some good and bad news to ropeless gear supporters.
The first report came from the Northeast Fishery Science Center and provided one of the first widespread measurements of ropeless gear retention. Ten lobster fishers set ropeless gear with EdgeTech technology in the Massachusetts Restricted Area and nearby federal waters. 527 traps were set, and 89.5% were retrieved on the first attempt without malfunction. Some of the 11.5% traps that did not return on the first attempt were recovered on subsequent attempts, so the study estimated the actual percentage of lost gear to be equal to or lower than the 5-15% average lost gear rate per season associated with traditional buoy lobster gear.
Each trap had an active acoustic modem sending alerts to all GPS devices in range, which successfully signaled to other vessels and mitigated any conflicts during the study. No gear conflicts were reported with traditional lobster harvesters, scallop dredgers, or other overlapping fleets.
But a second, more recent report from the State of Massachusetts found the expected costs of switching to ropeless fishing gear to be unviable. Currently, Massachusetts lobster harvest profits roughly 15 million per year after expenses. Switching to ropeless gear would eliminate any profit—the study estimated the state would lose 24 million in revenue per year, “and that’s with a 15-year loan to buy the on-demand gear with favorable interest rates.”
If all lobstermen were given ropeless gear for free, profits would still drop to 2 million per year due to the extra time required to harvest.
The disadvantage of using ropeless lobster gear would also be felt harder by smaller, more independent operators. Smaller boats usually fish with fewer traps per line, meaning a higher proportion of traps would directly use acoustic buoy deployments. According to the study, this would almost double the time it takes to retrieve all lobster gear for smaller boat operators.
Ropeless fishing gear is simply too expensive for widespread adoption in American lobster fisheries in the near future. Massachusetts has led the way in new gear testing, but only a fraction of the state’s lobster harvesters have handled the gear on the water. These fishers have been more willing than their counterparts in Maine to test gear because their Massachusetts fixed gear fisheries have been canceled or severely limited to avoid right whale interactions.