Reopened Marianas waters could create new fishing opportunities

Sep 9, 2026 | 2026, News

Changes to commercial fishing restrictions in parts of the Marianas Trench Marine National Monument could create new opportunities for Guam and Northern Mariana Islands fishing businesses, although industry officials say expanded access is unlikely to produce an immediate rush of vessels.

The Western Pacific Regional Fishery Management Council is working with Northern Islands officials on possible regulatory changes following the US Government’s move to reopen portions of protected waters to commercial fishing.

The discussions centre on the monument’s Islands Unit around the northernmost islands of the Commonwealth of the Northern Mariana Islands.

Council fishery analyst Zach Yamada said officials would work with Northern Islands mayors on regulations governing future fishing activity.

Importantly, reopening the waters does not abolish the Marianas Trench Marine National Monument, and access would remain restricted under US fisheries rules.

Yamada said eligible US-flagged operations would be able to use the area, while foreign vessels would not automatically receive access. Any foreign fishing proposal would require a separate process involving additional negotiations and federal requirements.

For Guam, the potential commercial significance lies in giving future fishing fleets a larger operating area.

Guam Advisory Panel chairman Michael Dueñas said waters to the south of Guam were constrained by international boundaries and other restrictions, making northern access potentially valuable to operators considering long-range commercial activity.

There has also been external interest in Guam’s potential as a fisheries base.

Dueñas said inquiries had been received from interests in the United Arab Emirates about commercial longline operations and the availability of infrastructure including ice, cold storage and shipping services, although he was not aware of firm investment plans.

That highlights the wider opportunity associated with fisheries development. Commercial fishing generates greater local value when vessels can obtain supplies, unload catches, use cold-storage facilities, process fish and export products through local ports.

The challenge is creating sufficient scale to make those investments viable.

Council officials noted that only a small number of vessels currently operate regularly in the Northern Islands area, meaning liberalised access may not immediately transform the industry.

Environmental management will also remain an important consideration given the ecological significance of the monument.

For Guam and the CNMI, however, expanded fishing access could reopen a discussion extending beyond harvesting fish: whether improved access can support viable fleets, port services, cold-chain infrastructure, processing and new export opportunities.

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