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With six of the seven main tuna species already fully fished or overfished, this study aims to find a correlation between tuna distribution and spawning grounds with reefer activity. Tuna is a highly sought-after fish species and reefers provide increased fishing activity while their use in transshipment can also aid in IUU fishing that mainly targets tuna sub-species. On a global scale, the study was unable to find any correlation between reefer activity and tuna distribution or habitat.

Port State Measurement Agreements (PMSA) aim to combat IUU fishing by bringing international parties to enact legislation and regulation on foreign vessels entering port. Parties to the PMSA, Port-States, are responsible for monitoring whether a vessel has engaged in IUU fishing. Reefers (because of their role in transshipment) pose a serious problem in effectively tracking and monitoring IUU fishing, leading to harmful marine biodiversity activity and human rights abuses such as seafood slavery. However, reefers are readily equipped with Automatic Identification System (AIS) Technology which, this paper shows, has proven to be an effective tool in MCS that PMSA parties can continue to use.

Using Global Fishing Watch data, Oceana identified where the hotspots for transshipment events worldwide. Many of the hotspots for transshipment were in areas where transshipment may be under less scrutiny. The Sea of Okhotsk has a long history of IUU fishing, but the Russian and Japanese EEZ zones account for more than 50 percent of the total likely transshipment events globally. Or the waters of Guinea-Bissau, a country unable to enforce strict transshipment regulation compliance, was another hotspot. The report shows how transshipment activity patterns arise based on the location, facilitating additional research into the nature of transshipments in these areas.

Transshipment at high seas is very difficult to monitor, allowing the possibility of illegally caught fish to enter the legitimate seafood market, or enabling human rights abuses. This paper uses AIS data to track global transshipment behavior. They find that a majority of transshipment occurs at high seas outside of EEZ boundaries–areas that may lack national jurisdiction or where regulations are difficult to enforce. Additionally, possible transshipment encounters are happening with vessels flying flags of convenience. Together, these findings paint a scene of large transparency issues in global transshipment behaviors that will need to be addressed by governing bodies.

This study uses AIS data to identify when and where transshipment occurs, which fisheries and fleets are most involved in the practice, and what proportion of the high-seas catch is transshipped versus landed directly, altogether giving a detailed account of global seafood supply chains. Among many other findings, the study finds that fishing in EEZs was mainly landed directly, but on high seas, transshipment largely predominated. Fleet usage also differed with trawlers mainly used in EEZs and longline fishing dominated at high seas. The study ultimately shows how the type of catch and its location shape the infrastructure of the supply food chain involved (i.e. a history of poor monitoring, low compliance, and weak enforcement correlates with a large number of transshipments in Russian waters.) The findings of this study can aid in identifying where illicit activity can be happening and what warrants more monitoring, control, and surveillance.

Without a Worldwide Unique Vessel Identifier (WUVI) database, the International community has largely relied on data in self-created combined vessel lists for spatiotemporal mappings of fishing presence, effort, and footprint. Projects match fishing vessel registration identifiers to their alleged AIS MMSI numbers using these vessel lists. This study aims to prove that this method has yielded a large number of erroneous ship identification references. Global Fishing Watch, one of the largest vessel identification projects, is crosschecked with the vessel data that the study gathered and found that it suffers from major flaws and biases. Such errors put at risk both the creditability of the GFW and private/independent fisheries monitoring control & surveillance (MCS) initiatives. Not only should projects use more scientific responsibility, but a worldwide database could also help end the data-gathering methods that brought these mistakes about.

FISH-i Africa has identified an increasing number of squid vessels operating in the Northwest Indian Ocean (NWIO). The problem is that these squid fisheries are unregulated because the Indian Ocean Tuna Commission (the region's RFMO) only has a mandate over tuna and tuna-like species. These fisheries are deliberately fishing on the high seas outside countries' EEZ zones to bypass national jurisdiction. The report gives a detailed account of the activity and characteristics of this emerging squid fishery and provides sound reasoning for immediate management frameworks to protect the region and the species.

This study builds upon the March 2014 WWF Emerging Technologies Workshop which held a goal to
help FFA Member countries better understand the existing MCS environment and objectively review and
assess available emerging technologies that might help to contribute to less expensive, more effective and
more efficient MCS efforts at both a national and regional level. This study attempts to take a systematic
approach towards estimating the strengths, weaknesses and financial costs of a range of emerging and
evolving technologies that could assist in addressing the challenges of fisheries MCS in the Western and
Central Pacific Ocean region.