On 17 January 2026, after nearly two decades of negotiations, the world’s first legally binding treaty to protect marine life in international waters entered into force. The High Seas Treaty — formally the Agreement under the United Nations Convention on the Law of the Sea on the Conservation and Sustainable Use of Marine Biological Diversity of Areas beyond National Jurisdiction, or BBNJ Agreement — now governs nearly two-thirds of the ocean that belongs to no single country. For fisheries, aquaculture and marine-science aspirants, it is now one of the most exam-relevant international agreements of the year — expect it in ICAR, UPSC, state PSC and fisheries-university papers.
This post gives you the verified facts first, then 20 exam-style MCQs with answers and explanations. Every date and figure below was checked against official and primary sources on 6 November 2026.
High Seas Treaty (BBNJ) at a glance
| Item | Verified fact |
|---|---|
| Full name | Agreement under UNCLOS on the Conservation and Sustainable Use of Marine Biological Diversity of Areas beyond National Jurisdiction (BBNJ) |
| Common name | High Seas Treaty |
| Adopted | 19 June 2023, by consensus at the United Nations, New York |
| Entry into force | 17 January 2026 — 120 days after the 60th ratification |
| Ratifications needed | 60 countries |
| 60th ratification | 19 September 2025 |
| Ratifications now | More than 80 countries |
| First country to ratify | Palau (January 2024) |
| Legal status | Third implementing agreement under the UN Convention on the Law of the Sea (UNCLOS, 1982) |
| Applies to | Areas beyond national jurisdiction (ABNJ) — the high seas plus the international seabed area, about 60% of the ocean’s surface |
| Binds | Only the countries that have ratified it |
| First Conference of the Parties | Expected in New York in early 2027 |
The four pillars of the treaty
The BBNJ Agreement is built on four interdependent pillars — learn them as a set, because examiners love asking which item belongs where:
- 1. Marine genetic resources (MGRs) — including digital sequence information (DSI). Benefits from their use, monetary and non-monetary, must be shared fairly and equitably, including with developing countries.
- 2. Area-based management tools (ABMTs) — including marine protected areas (MPAs). For the first time, there is a legal route to create protected areas on the high seas, where no single country has jurisdiction.
- 3. Environmental impact assessments (EIAs) — parties must assess planned activities under their jurisdiction or control in ABNJ that could cause significant harm to the marine environment.
- 4. Capacity-building and transfer of marine technology — to help developing countries, including small island states, participate in and benefit from high-seas science and conservation.
One thing the treaty does not do: it does not license deep-sea mining. Mineral resources of the international seabed area (“the Area”) remain under the International Seabed Authority (ISA), a separate UNCLOS body. That distinction is a classic exam trap.
Why it matters for fisheries: the 30×30 gap
The treaty is the missing legal piece of the global 30×30 target — Target 3 of the Kunming-Montreal Global Biodiversity Framework, adopted at CBD COP15 in December 2022 by 196 countries, to conserve at least 30% of land, inland waters and oceans by 2030. Until the BBNJ Agreement, there was simply no legal mechanism to declare a protected area in international waters, which is why the high seas — outside national jurisdiction — remain less than 1.5% protected.
The numbers show how far there is to go. About 8.4% of the ocean was designated as marine protected areas in mid-2025, crossing 10% in early 2026 according to UNEP — but only around 3% of the ocean is fully or highly protected, the level that actually delivers conservation outcomes. Many designated zones are “paper parks”: lightly managed, or still open to bottom trawling and other destructive fishing. The treaty’s MPA mechanism is meant to close that gap — the first high-seas protected areas could emerge around 2028–2029, after a still-lengthy designation process.
For scale, the world’s largest marine protected area today is the Ross Sea Region MPA in Antarctica — about 1.55 million sq km, established in 2016 by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR). High-seas MPAs created under BBNJ would be the first reserves in waters beyond any nation’s jurisdiction.
India and the treaty
India signed the BBNJ Agreement in September 2024 but had not ratified it as of late 2025 — so the treaty does not yet bind India. The same is true of several major powers: the United States signed on 20 September 2023 and its Senate has not acted, and China, the United Kingdom, Russia and Brazil have signed but not completed ratification. For Indian aspirants, the India angle is exactly this: signed, not ratified — and India has separately moved on high-seas access, approving accession to the Southern Indian Ocean Fisheries Agreement (SIOFA) in October 2026. Read the related posts linked at the end of this article for the full picture.
20 MCQs: High Seas Treaty, MPAs and 30×30
Attempt all 20 before checking the key. One mark each; a score of 16+ means you are exam-ready on this topic.
Q1. What does BBNJ stand for?
(a) Biodiversity Beyond National Jurisdiction (b) Blue Biodiversity and National Jurisprudence (c) Biological Boundaries of National Jurisdiction (d) Biodiversity Board for National Jurisdictions
Answer: (a) — Biodiversity Beyond National Jurisdiction. The full name is the Agreement on the Conservation and Sustainable Use of Marine Biological Diversity of Areas Beyond National Jurisdiction.
Q2. The High Seas Treaty (BBNJ Agreement) was adopted on:
(a) 19 June 2023 (b) 19 June 2022 (c) 17 January 2026 (d) 19 September 2025
Answer: (a) — Adopted by consensus at the UN in New York on 19 June 2023, after nearly two decades of negotiations.
Q3. The BBNJ Agreement entered into force on:
(a) 19 September 2025 (b) 17 January 2026 (c) 19 June 2023 (d) 1 January 2026
Answer: (b) — 17 January 2026, exactly 120 days after the 60th ratification on 19 September 2025.
Q4. How many ratifications were required for the BBNJ Agreement to enter into force?
(a) 30 (b) 50 (c) 60 (d) 100
Answer: (c) — 60 ratifications, the threshold written into the treaty itself.
Q5. Which country was the first to ratify the BBNJ Agreement?
(a) Fiji (b) Palau (c) Singapore (d) Seychelles
Answer: (b) — Palau ratified in January 2024, the first of the 60+ parties.
Q6. The BBNJ Agreement is an implementing agreement under:
(a) Convention on Biological Diversity (b) Ramsar Convention (c) UN Convention on the Law of the Sea (UNCLOS) (d) MARPOL
Answer: (c) — It is the third implementing agreement under UNCLOS (1982), after the 1994 Part XI Agreement and the 1995 Fish Stocks Agreement.
Q7. Areas beyond national jurisdiction (ABNJ) comprise:
(a) Only the high seas (b) The high seas and the international seabed area (“the Area”) (c) Only exclusive economic zones (d) Territorial seas and contiguous zones
Answer: (b) — ABNJ is the high seas plus the seabed beyond national jurisdiction, together about 60% of the ocean’s surface.
Q8. Approximately what share of the ocean’s surface lies beyond national jurisdiction?
(a) About 30% (b) About 45% (c) About 60% (d) About 85%
Answer: (c) — About 60% of the ocean’s surface, nearly two-thirds of the ocean by area.
Q9. How many pillars (core themes) does the BBNJ Agreement have?
(a) Two (b) Three (c) Four (d) Six
Answer: (c) — Four: marine genetic resources, area-based management tools, environmental impact assessments, and capacity-building and technology transfer.
Q10. Which of the following is NOT one of the four pillars of the BBNJ Agreement?
(a) Marine genetic resources (b) Area-based management tools (c) Licensing of deep-sea mining (d) Environmental impact assessments
Answer: (c) — Deep-sea mining licensing stays with the International Seabed Authority; the BBNJ treaty does not license mining.
Q11. The global “30×30” target — conserve 30% of land and ocean by 2030 — comes from:
(a) The Paris Agreement (b) Target 3 of the Kunming-Montreal Global Biodiversity Framework (c) The Sustainable Development Goals, Goal 14 alone (d) The Aichi Targets of 2010
Answer: (b) — Target 3 of the Kunming-Montreal Global Biodiversity Framework, adopted at CBD COP15 in December 2022 by 196 countries. (The Aichi Targets set the earlier 10% ocean goal for 2020.)
Q12. What share of the global ocean is designated as marine protected areas (as of 2025–26)?
(a) About 2% (b) About 8–10% (c) About 25% (d) About 40%
Answer: (b) — About 8.4% in mid-2025, crossing 10% in early 2026 (UNEP) — but only around 3% is fully or highly protected.
Q13. What share of the ocean is fully or highly protected?
(a) About 3% (b) About 10% (c) About 18% (d) About 30%
Answer: (a) — Only around 3% (2.7–3.5% across assessments). Roughly a quarter of reported marine protection is not yet implemented on the water, and another third still allows high-impact activities like bottom trawling.
Q14. The world’s largest marine protected area is:
(a) Papahānaumokuākea Marine National Monument (b) Great Barrier Reef Marine Park (c) Ross Sea Region MPA (d) Chagos Marine Protected Area
Answer: (c) — The Ross Sea Region MPA in Antarctica, about 1.55 million sq km, established in 2016 by CCAMLR.
Q15. Under UNCLOS, the breadth of a coastal state’s exclusive economic zone (EEZ) is:
(a) 12 nautical miles (b) 24 nautical miles (c) 200 nautical miles (d) 350 nautical miles
Answer: (c) — 200 nautical miles from the baseline. Waters beyond EEZs are the high seas, where the BBNJ Agreement now applies.
Q16. What is India’s status under the BBNJ Agreement?
(a) Ratified in 2024 (b) Signed in September 2024, not yet ratified (c) Has neither signed nor ratified (d) Ratified in January 2026
Answer: (b) — India signed in September 2024 and had not ratified as of late 2025. The treaty binds only parties that have ratified it.
Q17. The first Conference of the Parties (COP) to the BBNJ Agreement is expected:
(a) In Geneva in 2026 (b) In New York in early 2027 (c) In Nairobi in 2028 (d) In Paris in 2030
Answer: (b) — In New York in early 2027, after preparatory meetings (the third preparatory meeting was held in April 2026) finalised institutional and financial decisions.
Q18. Benefit-sharing under the BBNJ Agreement for marine genetic resources covers:
(a) Monetary benefits only (b) Non-monetary benefits only (c) Both monetary and non-monetary benefits, including digital sequence information (d) No benefit-sharing — resources are open access
Answer: (c) — Fair and equitable sharing of both monetary and non-monetary benefits from marine genetic resources, including their digital sequence information.
Q19. Environmental impact assessments under the BBNJ Agreement are required for:
(a) All fishing anywhere in the ocean (b) Planned activities under a party’s jurisdiction or control in ABNJ that may cause significant harm (c) Only deep-sea mining projects (d) Coastal construction within EEZs
Answer: (b) — Planned activities in areas beyond national jurisdiction that could cause substantial pollution or significant harmful changes to the marine environment.
Q20. The UN Convention on the Law of the Sea (UNCLOS), under which the BBNJ Agreement sits, was adopted in:
(a) 1972 (b) 1982 (c) 1992 (d) 2002
Answer: (b) — Adopted in 1982 (entered into force in 1994). The BBNJ Agreement is its third implementing agreement.
How to score yourself
- 18–20: Exam-ready. Revise only the India-status and ratification-count questions, which change as more countries ratify.
- 14–17: Solid. Re-read the four pillars and the 30×30 numbers — those two areas carry the most questions.
- 10–13: Learn the at-a-glance table by heart, then re-attempt the set tomorrow.
- Below 10: Start with the treaty timeline (adopted 19 June 2023 → 60 ratifications 19 September 2025 → in force 17 January 2026) and the four pillars, then retry.
Frequently asked questions
Is the High Seas Treaty the same as UNCLOS? No. UNCLOS (1982) is the constitution of the oceans. The BBNJ Agreement is a newer, separate treaty that implements UNCLOS for biodiversity beyond national jurisdiction — the part of the ocean UNCLOS left without a conservation framework.
Does the treaty ban fishing on the high seas? No. It creates tools — protected areas, impact assessments, benefit-sharing — to manage high-seas activity. It does not ban fishing, and fisheries management on the high seas remains primarily with regional fisheries management organisations (RFMOs).
Why do exam papers ask about this treaty? Because it is the biggest ocean-governance development in decades, it entered into force in January 2026, it connects to the 30×30 target, MPAs and India’s own high-seas moves — and its dates (19 June 2023, 19 September 2025, 17 January 2026) are perfect MCQ material.
Will the ratification count keep changing? Yes. More than 80 countries have ratified so far and more are joining. If you are revising for a 2027 exam, check the current count on the UN treaty pages or the High Seas Alliance ratification tracker before the exam.
Related reading on Fisheries India
- IUU Fishing MCQs: 20 Questions Every Aspirant Must Ace — the other high-seas enforcement topic examiners pair with BBNJ.
- Coral Reef MCQs: 20 Questions Every Aspirant Must Ace — reef ecology and protection, the habitat MPAs are designed to save.
- India Approves SIOFA Accession: High-Seas Access Opens — India’s October 2026 move on high-seas fishing access, the national complement to this treaty.
- World Fisheries 2026: 20 MCQs Every Aspirant Must Ace — global fisheries facts, including the FAO SOFIA figures behind the 30×30 debate.
Sources and official links
- High Seas Treaty enters into force (17 January 2026) — The Nature Conservancy: nature.org
- BBNJ ratification milestone — Charles Darwin Foundation: darwinfoundation.org
- Entry into force of the BBNJ Treaty — French Facility for Global Environment (FFEM): ffem.fr
- Global progress toward 30×30 — Marine Conservation Institute / MPAtlas: marine-conservation.org
- 30×30 reporting guide — Earth Journalism Network: earthjournalism.net
- US Congressional Research Service, BBNJ Agreement brief (updated January 2026): everycrsreport.com
Fact-check note (6 November 2026): adoption (19 June 2023), 60th ratification (19 September 2025), entry into force (17 January 2026), first ratifier (Palau, January 2024), India signed September 2024 and not ratified as of late 2025, 80+ ratifications, and the four pillars are corroborated by multiple primary and institutional sources checked on 6 November 2026 (The Nature Conservancy, Charles Darwin Foundation, FFEM, CRS, Lowy Institute). MPA figures: 8.4% designated in mid-2025 (MPAtlas/Phys.org) rising past 10% in early 2026 (UNEP), with ~3% fully or highly protected (Marine Conservation Institute). The first COP date (early 2027, New York) is the expected schedule per FFEM, January 2026 — re-verify before citing in an exam. The featured image is an illustration, not a photograph of a treaty event.