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Fishing for Energy: A Derelict Fishing Gear Solution (Part II)


By Anna Manyak, Northeast Regional Coordinator and Knauss Fellow, NOAA Marine Debris Program

Derelict fishing gear is a prevalent type of marine debris throughout the oceans, and like other forms of marine debris, it is a complicated issue without a clear solution.  Two weeks ago, I participated in a coastal cleanup in New Hampshire with members of Blue Ocean Society for Marine Conservation and University of New Hampshire Sea Grant, where I got to see the issue firsthand.  In New Hampshire and throughout New England states, regulations designed to protect important marine species and the personal property of lobstermen have unintentionally led to a significant marine debris issue.

To understand the issue, it’s important to understand how the lobster fishery works in New England.  Lobsters are caught using metal or wooden lobster pots, which can be deployed in a number of configurations based off of the following general diagram (for many more configurations, check this out):

Basic configuration of lobster trap deployment.

The diagram highlights two important gear modifications designed to prevent harmful interactions between local marine mammals and lobster gear that have also contributed to the marine debris issue: the weak link and sink line. The weak link is designed to allow the buoy to easily disconnect from the sink line if a marine mammal comes in contact with it.  However, the buoy can also easily detach if a boat accidentally hits it, which can ultimately lead to lost gear.  Up until 2009, the loss of pots through these accidental encounters with boats was mitigated through float lines; if the buoy was disconnected, the line attached to all of the pots would at least still float at the surface.  However, these float lines also posed a threat to marine mammals, which could become entangled.  Regulations now require that sink lines are used on lobster pots.  While the weak link and the sink line are important for marine mammals, these modifications can cause lobster pots to become marine debris.

Once lost, the derelict lobster pots can negatively impact the marine environment and economy.  Lost pots can continue to fish for target and non-target species, many times capturing and killing either protected or commercially important organisms.  In addition, strong water currents can drag pots along the bottom, scouring and damaging sensitive marine habitats.  Strong storms can even move lobster pots out of the water, impacting coastal habitats as well.  The lost pots can also hinder the lobster fishery, by taking up prime real estate on the seafloor that could otherwise be used for fished pots.

Derelict lobster traps collected from White Island in the Isles of Shoals
Photo credit: Gabriela Bradt, UNH Sea Grant and Blue Ocean Society for Marine Conservation

While the derelict fishing gear issue poses a great problem, regulations in coastal New England states designed to protect the property of lobstermen unintentionally make cleanup of derelict pots difficult.  In states such as Massachusetts, New Hampshire, and Maine (among others), removing or even touching fishing gear belonging to someone else is prohibited, even if the gear is unfishable.  These laws were established when lobster pots were frequently being stolen to make lobster pot coffee tables.  These regulations are important and remain to protect the catch and property of lobstermen; however, they hinder gear cleanups as a local regulatory official must be present at the cleanup to determine if gear can be removed.

Full 30 foot dumpster of derelict fishing gear collected from White Island in the Isles of Shoals.
Photo credit: Gabriela Bradt, UNH Sea Grant and Blue Ocean Society for Marine Conservation

While the ultimate solution lies in finding a way to prevent gear from being lost in the first place, the Fishing for Energy program provides a solution to cleaning up the gear currently present.  In addition to the general program that provides bins for derelict gear disposal, each year a Fishing for Energy grant program offers competitive funding for groups to conduct assessments and removal of derelict fishing gear throughout the United States.  Successful projects are required to engage fishermen and, in states where necessary, state marine regulatory officials.  Engagement of fishermen helps to increase awareness of the derelict fishing gear issue throughout the fishing community, and involving local regulatory officials alleviates legal hindrances to gear removal.  As with the bin program, all collected gear is recycled or burned as a source of renewable energy with the help of Schnitzer Steel or Covanta Energy.

Interested in learning more about Fishing for Energy?  Stay tuned as our blog series continues next week.

Author: NOAA Marine Debris Program

The NOAA Marine Debris Program envisions the global ocean and its coasts, users, and inhabitants free from the impacts of marine debris. Our mission is to investigate and solve the problems that stem from marine debris, in order to protect and conserve our nation's marine environment, natural resources, industries, economy, and people.

3 thoughts on “Fishing for Energy: A Derelict Fishing Gear Solution (Part II)

  1. Here in our fishing village of Bodega Bay, California, crab pots and mussel bags wash up on shore. Another eyesore is the abandoned oyster beds in Tomales Bay. How well would it work for us to leave our rusted cars abandoned on our roadways? We need solutions that compel fisherman to be better stewards of the ocean.

  2. Thank you for pointing out the ironic conflict between one federal regulatory agency’s mandates and another’s mission. When NOAA Fisheries imposed the use of sinking line on trap or pot gear along most of the east coast, lobstermen in Maine knew right away that the outcome would be more lost traps, due to the very rough and jagged nature of the ocean floor where they fish for lobster. It is very difficult to recover traps lost in that bottom-type, as grappling gear (essentially large hooks dragged along the bottom to recover traps or rope) catch up on the same rocks that chafe through the sinking rope. The author is right when she says the only solution to the marine debris problem is to prevent the gear from being lost in the first place, but given the myriad ways a trap or pot can become “lost, abandoned or derelict”, it’s a tall order. Meantime, lobstermen do what they can to retrieve their own lost traps by grappling, and groups like the Blue Ocean Society, Gulf of Maine Lobster Foundation and Stellwagen Alive! have implemented at-sea and shoreline gear recovery programs, which is at least bringing attention to the complicated issue — and oh by the way, is also recovering lost traps. Kudos to all!

  3. Pingback: Fishing for Energy: Powering Local Communities (Part III) « Marine Debris Blog

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