The Northern Territory Seafood Council (NTSC) and the Northern Territory Government (NTG) recognise the vital need to bridge the knowledge gap regarding the economic impact of the NT seafood industry. This gap severely impedes effective advocacy for industry growth and development by the NTSC and hampers evidence decision-making. Without a comprehensive understanding of the industry's economic footprint throughout the supply chain of each major fishery/sector, it is challenging to address critical issues and identify vulnerable points within the sector.

A whole of fishery and sector analysis, will provide essential insights for targeted advocacy and informed decision-making, fostering sustainable growth, enhancing resilience, and addressing critical issues within the Northern Territory's seafood industry.

Understanding the complete value of the NT seafood industry to the local community is crucial for making strategic decisions related to negotiations such as those concerning Blue Mud Bay and infrastructure investments. It will also contribute to ongoing investment in the industry.

The project aims to test economic protocols and processes identified in FRDC Project 2021-034 to establish cost-effective and valued systems beyond its duration. These systems will incorporate socio-economic information into decision-making processes and shift the culture from a government-driven collection process to one driven by the industry.

Without a plan to highlight the wider socio-economic value and benefits of the industry, the industry may face mounting pressure on its social license to operate, impacting access, industry structure, and fees. Moreover, the lack of understanding regarding the consequences of uncertainty surrounding secure access and potential loss of access for commercial fishers may have unintended effects on the NT seafood industry. Additionally, the limited availability of current financial and economic information for NT fisheries hampers economic analysis and the provision of advice to policymakers and decision-makers, hindering opportunities for growth and sustainability.

With that context in mind, NTSC experience to date identifies a number of known issues with existing data, including:
- Limitations in the scope of data available which has historically excluded measurement of the contributions made by commercial charter fishing, processing of imported seafood, and activities downstream of immediate seafood processing (i.e. transport to retail markets, retail sector activity).
- The poor quality of economic data (such as production, price and employment data) necessary to improve estimates of direct or initial effects from fishing, aquaculture production and processing in some fisheries and for some sub-sectors and seafood processing (where there is a need to further disaggregate ANZSIC categories or investigate alternative means of measurement for fisheries with too few licence holders for data to be reported).
- Gaps in data regarding indirect contributions, including downstream production-induced and consumption-induced effects, where key data regarding employment, household-income and enterprise-level cost of production (i.e. expenditure on goods and services as inputs to fishing and aquaculture production) are unknown.
- Gaps in data for a range of monetised and non-monetised social, environmental and cultural activities which contribute value to individuals and communities. While previous estimations have referred to the social contributions of fisheries and aquaculture to regional communities this has not involved any primary data collection or analysis of secondary data, requiring further work to select specific indicators and the basis of evidence.

In scoping and analysing the available data, the project will use third party providers to:
- Ensure data collection methods are consistent and participant consent and privacy is achieved. The privacy of participants must be protected through adherence to the Australian Privacy Principles in the Privacy Act 1988 (Cth), such that names of individuals are not recorded. Where the explicit informed consent of participants is required this may include a requirement to sign a consent form. Under circumstances where a vulnerable group is consulted, such as Indigenous Territorians, specific consent may be required from a Human Research Ethics Committee to ensure the data collection process causes no harm to participants.
- Ensure data storage is secure and access is limited to the reasonable requirements of the project. All digital data (i.e. from an online survey) would be stored on a secure network with file access restricted to the nominated project team through use of file encryption and passwords. Any primary data collected cannot be used for any purpose other than that required to meet study objectives.

Catch Per Unit Effort (CPUE) from commercial logbooks is often used as an index of abundance in stock assessments. However, the use of commercial CPUE as an indicator of relative abundance can be problematic as the underlying assumption that commercial catch rates change linearly with abundance is often compromised. Although some factors that are reported in logbooks can be used to standardise CPUE, there are other sources of variation including:
• Modified fishing practices to target or avoid species to suit quota availability, meet market demands, or to comply with management arrangements.
• Differences in selectivity of fishing gear and use of bycatch-reduction devices.
• The combined impacts of multiple management restrictions on a fishery.
For example, gillnet operations in what was once the Northern Territory’s Shark Fishery now almost exclusively target Grey Mackerel. This change in practice has resulted in an index that is losing its relevance in assessing shark species.

Over 140 elasmobranchs are listed on CITES Appendix II, with the likely-hood that more species will be added in the future. Of the 11,082t of shark landed by the fishery since 2000, CITES listed Hammerheads comprise 17.25% of the shark catch. Other sharks caught by the fishery that were recently added to CITES Appendix II at the Nineteenth meeting of the Conference of the Parties Panama City (Panama), 14 – 25 November 2022 include: Grey Reef Shark, Dusky Whaler, Sandbar Shark, Lemon Shark, Whitecheek shark and all other members of the family Carcharhinidae (which include the Blacktip Shark complex that is the main shark species caught by the fishery - 4688t or 42% since 2000). These species will require a positive Non-Detriment Finding (NDF) and CITES export permit in order to be exported following the 12-month delay in implementation (i.e., December 2023). The fishery also catches Threatened, Endangered and Protected Elasmobranchs, some of which are also CITES listed.

Gillnet and longline effort has decreased since 2000 and there is significant latent effort in the fishery. There is a desire to utilise this latent effort, however, the CITES listing of the majority of sharks species caught in the fishery will increase scrutiny from State, Commonwealth and International environmental agencies, as well as NGOs. This heightened scrutiny will provide greater impetus to demonstrate that shark stocks are at sustainable levels and that fishing is being undertaken sustainably.

There is a strong need for independent survey methods to gain a better understanding of the abundance patterns of shark species over time that can contribute to the development of appropriate management of these species that meets environmental, fisheries, and conservation needs.

Surveying Northern Australia using longlining methods would provide a fishery independent estimate of relative abundance for sharks that would improve economic security and public confidence in sustainability. However, to make an informed decision of the feasibility of a survey a full understanding of the scope of work and cost required is needed. There is a need to look at existing long line surveys undertaken worldwide (e.g. in the USA and Bahamas), to understanding the methods undertaken and the time period required to develop accurate abundance estimates.