Overview

Australia supports the conservation and sustainable use of marine biodiversity beyond our maritime boundaries through the High Seas Biodiversity Act 2026 (the Act).

The Act implements Australia’s obligations under the High Seas Biodiversity Treaty (BBNJ).

The Act will enter into force for Australia when Australia becomes a Party to BBNJ, which is expected to occur later in 2026.

A healthy and resilient ocean supports Australia’s significant marine industries and is a critical connection between Australia and our region.

We are seeking your views on how Australia will implement these new requirements.

Consultation documents

High Seas Biodiversity Act 2026 - Federal Register of Legislation

Have your say

To have your say:

  • review the High Seas Biodiversity Act 2026

  • take our survey now.

Submit your feedback by 5.00pm (AEST), Monday, 28 September 2026.

Your feedback will help us to understand how the requirements may affect Australians and how Australia should focus its efforts in giving effect to the Treaty’s obligations on the global stage.

Read more

High seas biodiversity

Timeline

  • Opened
    open

    30 August 2026

  • Closes
    pending

    28 September 2026

Contact
International Ocean Section