At present, some of the sources of marine plastic litter are known to be lost and abandoned fishing gear, which is referred to as "ghost gear," "ALDFG" (Note 1), etc. Through SeaBOS (Note 2), Nissui has joined GGGI (Note 3) and is also making efforts to prevent fishing gear used by fishery companies and aquaculture companies in the Nissui Group in Japan from flowing out into the ocean.

(Note 1): Abandoned, Lost or otherwise Discarded Fishing Gear.
(Note 2): Seafood Business for Ocean Stewardship.
(Note 3): Global Ghost Gear Initiative. An international body working to prevent fishing gear from flowing out into the ocean.

Enhancement of Fishing Gear Management Rules

The Nissui Group will manage fishing gear in a thoroughgoing manner not only to prevent fishing gear from flowing out into the ocean but also to help reduce accidents involving the breakage of fishing gear (operation loss, escaped cultured fish and other factors that affect the ecosystem) and work-related accidents.
We are enhancing fishing gear management rules at all aquaculture companies and fishery companies in the Nissui Group in Japan. Our existing fishing gear management rules at the individual company level have been reviewed afresh from the viewpoint of preventing fishing gear from flowing out into the ocean by using GGGI’s “Best Practice Framework for the Management of Fishing Gear” (a guideline for fishing gear management targeting persons involved in fishery business, consisting of prevention, mitigation and remediation) as reference. These fishing gear management rules include equipment condition checks, employee education, appropriate disposal of used fishing gear, and reporting procedures, etc., in the unlikely event that fishing gear has been lost or abandoned.

Initiatives

[Initiatives: Prevention]

• Sorted items to be checked in terms of fishing gear equipment condition and replacement criteria: Reconfirmed items to be checked in inspections and replacement criteria for each fishing gear on an individual company basis (ⅰ. Visual inspection, ⅱ. Useful life, iii. Numerical criteria)
• Introduced maintenance records: Utilized fishing gear maintenance records for managing fishing gear
• Appropriate disposal of used fishing gear: Confirmed the appropriate disposal of used fishing gear as industrial waste in compliance with the law
• Pre/post-typhoon checks: Checked fishing gear before/after a typhoon has passed at farming sites that are susceptible to the impact of typhoons
• Conducted employee education: Established a rule to conduct education on the marine plastics problem targeting employees at each company (at least once a year). The results are as follows.

Employee Education

[Initiatives: Mitigation]

We standardized reporting procedures and matters to be reported in the unlikely event that fishing gear has been lost or abandoned. Within the Group, it is mandatory for the staff at the site of each aquaculture company/fishery company to report such an incident to the company representative, who must then report it to Nissui’s executive officer. Outside the Group, a report must be made to relevant organizations, etc. Matters to be reported are standardized among all companies, including basic information (i.e., when, where, what, how and why), in addition to the recoverability of such fishing gear and preventive measures for the future. In the event of outflow of fishing gear into the ocean, we will strive for thorough reporting and take steps to prevent recurrence.

Report on incidents of fishing gear outflow

[Initiatives: Remediation]

Objects washed ashore after a natural disaster (e.g., typhoon) pose a big problem. These include plastics, including fishing gear such as floats, which not only affect the scenery and the coastal environment but are also costly and require a lot of manpower to deal with them. In the event of fishing gear being lost by the Nissui Group in the course of our operations, we will endeavor to retrieve such fishing gear to the best of our ability.

Switching over to Floats That Have a Low Risk of Becoming Plastics That Outflow into the Ocean

Traditionally, marine aquaculture operations have commonly used nylon-covered polystyrene foam floats. However, due to insufficient durability, these nylon covers often become damaged, leading to internal polystyrene foam breaking apart and dispersing into the ocean, thus contributing to marine plastic pollution.
The Nissui Group operates marine aquaculture businesses overseas for salmon and domestically in Japan for species such as Japanese amberjack, greater amberjack, coho salmon, and bluefin tuna. A FY2019 survey identified that a total of 19,540 nylon-covered floats were used across the Group’s aquaculture operations. In response, we set a target that “By the end of March 2025, the Nissui Group will cease the use of nylon-covered polystyrene foam floats for use in aquaculture and completely switch over to floats that have a lower risk of becoming plastic that outflows into the ocean. ” The transition to PE-coated polystyrene foam floats and hollow resin floats, among other options, has been successfully completed as of March 2025.
We will continue to proactively address the issue of marine plastic pollution through our ongoing business activities across the entire Group.

Floats at Marine Aquaculture Sites Following Switchover

[Before switchover]

Nylon-covered polystyrene foam floats

Inside polystyrene foam​

[Post-switchover example]​

PE-coated polystyrene foam floats

Sealord Group Ltd., a Nissui Group company based in New Zealand, is involved in fishing as well as the processing and sale of seafood products. In collaboration with Motueka Nets, also located in New Zealand, Sealord is advancing the recycling of its fishing nets. Traditionally, Sealord disposed of used fishing nets in landfills. These nets, composed of metals and various types of plastics, could not be recycled without proper separation of materials―a process that was highly labor-intensive. Through their partnership, Sealord and Motueka Nets have made it possible to dismantle, sort, and recycle fishing nets.

Fishing Net Dismantling and Recycling Flow

Sealord's nets 1

Sealord's nets 2

“Upcycling” means utilizing waste, items no longer needed and other things that would have otherwise been discarded and transforming them into other products. In FY2021, Nissui worked jointly with the Yamaguchi Prefectural Government, Marukyu Co., Ltd. and TerraCycle Japan on “ONE FOR OCEAN,” a private-public upcycling project utilizing marine plastic litter. This project has been adopted as a model project in the “FY2021 Local Blue Ocean Vision Project” of the Ministry of the Environment. In FY2021, Nissui, together with Yamaguchi Prefecture, Marukyu Co., Ltd. and TerraCycle Japan, launched the public-private upcycling project called “ONE FOR OCEAN” (centered around the utilization of marine plastic waste, “ONE FOR OCEAN” was chosen as a model project for the Ministry of the Environment's “FY2021 Local Blue Ocean Vision” project). Approximately 450 people from prefectural residents, private organizations, and compnies participated in a coastal cleanup on May 19, 2024, and collected approximately 1.5 tons of litters. Of this, 37 of the collected polyethylene tanks were upcycled into shopping baskets as part of the raw materials.

Flow of “ONE FOR OCEAN” (Example from FY2021)

Marine litter including plastics is said to originate from the land, mainly from the cities but its discharge routes are not known. From FY2018, Nissui has been a supporter of Pirika Inc., which is committed to the Albatross Project that aims to investigate the facts surrounding plastics flowing into the ocean and has commenced concrete approaches in dealing with the problems of the marine environment and the problem of plastics flowing into the ocean, which are directly connected to Nissui’s business.

Details of the Albatross Project which aims to investigate the facts surrounding the problem of plastics flowing into the ocean

●STEP1

Development of research methods: Develop an effective method of research on the flow of plastics into the ocean.

●STEP2

Clarification of the flow mechanism: Study the mechanism of plastics flowing into the ocean (flow routes and flow items) and narrow down the problem.

●STEP3

Study and implementation of measures: Study, prioritize and implement measures to combat the problem of plastics flowing into the ocean.

Pirika Inc.: https://en.corp.pirika.org/