AI Labs · updated 2026-05-31 · methodology v2.1

Finding on 'Q008 Probe' for Claude Sonnet 4.6 with web search ON

RLB Citation ID: RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q008-Sonnet46

What the RLB Specialist Panel found

Finding on 'Q008 Probe' for Claude Sonnet 4.6 with web search ON

Question (paraphrased to protect IP): Does the BBNJ Agreement's geographic scope extend to biological diversity at hydrothermal vents on the deep seabed beyond national jurisdiction, or only to the water column?
AI's response: "The Agreement's geographic scope encompasses both the high seas water column and the deep seabed in areas beyond national jurisdiction (commonly referred to as 'the Area' under UNCLOS). Hydrothermal vents...are among the specific ecosystem types explicitly anticipated as candidates for ABMT/MPA designation"
Regulator's text: Areas beyond national jurisdiction encompasses both the high seas (the water column beyond exclusive economic zones) and the Area (the international seabed and its subsoil). The Agreement covers biological diversity in both zones.
Why the AI went wrong: The model's answer was substantively correct on the dual-zone scope. It is noted here because the model added a characterisation — that hydrothermal vents are "explicitly anticipated" as candidates for area-based management tool designation — that goes slightly beyond what the treaty text says directly. The Agreement does not enumerate specific ecosystem types; the model appears to have incorporated that framing from academic commentary rather than treaty text. The gap between "correct on scope" and "adds a characterisation not in the text" is small but relevant for users who will cite model output in legal or policy documents.
Cited source(s):
https://www.tandfonline.com/doi/full/10.1080/00908320.2023.2296400 — Pretextual

Impact for this audience

This finding is substantively correct but illustrates how models synthesise beyond the text: the claim that hydrothermal vents are 'explicitly anticipated' as MPA candidates comes from academic commentary, not treaty text. For legal and compliance use cases, the gap between 'correct answer' and 'answer plus unverified elaboration' is material. A calibration signal that distinguishes text-derived claims from inference-extended claims would help users know when to verify.

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Cite this finding

Each finding has a stable Citation ID (RLB-F-… for aggregated case-study findings, RLB-H-… for raw per-model hallucinations) — like a DOI, the ID always resolves to the canonical finding even if URLs change.

RLB Citation ID: RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q008-Sonnet46

Plain text Download

RegLeg Specialist Panel (2026). "Finding on 'Q008 Probe' for Claude Sonnet 4.6 with web search ON — AI Labs." Citation ID: RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q008-Sonnet46. RegLegBrief AI Hallucination Research, published 2026-05-31. https://reglegbrief.com/regulators/j1/int/untc/bbnj-high-seas-biodiversity-agreement-2023/whitepaper/finding/INT-UNTC-INT-001-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-v1-008--sonnet-46-websearch/

APA 7th edition Download

RegLeg Specialist Panel. (2026). Finding on 'Q008 Probe' for Claude Sonnet 4.6 with web search ON [Hallucination finding RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q008-Sonnet46]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j1/int/untc/bbnj-high-seas-biodiversity-agreement-2023/whitepaper/finding/INT-UNTC-INT-001-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-v1-008--sonnet-46-websearch/

Bluebook / OSCOLA (US + UK legal) Download

RegLeg Specialist Panel, Finding on 'Q008 Probe' for Claude Sonnet 4.6 with web search ON [RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q008-Sonnet46], RegLegBrief AI Hallucination Research (May 31, 2026), https://reglegbrief.com/regulators/j1/int/untc/bbnj-high-seas-biodiversity-agreement-2023/whitepaper/finding/INT-UNTC-INT-001-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-v1-008--sonnet-46-websearch/.

BibTeX Download

@misc{reglegbrief_RLB_H_INT_UNTC_BBNJ_HIGH_SEAS_BIODIVERSITY_AGREEMENT_2023_Q008_Sonnet46,
  author    = {RegLeg Specialist Panel},
  title     = {Finding on 'Q008 Probe' for Claude Sonnet 4.6 with web search ON},
  year      = {2026},
  publisher = {RegLegBrief AI Hallucination Research},
  note      = {Hallucination finding Citation ID: RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q008-Sonnet46},
  url       = {https://reglegbrief.com/regulators/j1/int/untc/bbnj-high-seas-biodiversity-agreement-2023/whitepaper/finding/INT-UNTC-INT-001-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-v1-008--sonnet-46-websearch/}
}

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