Harper v Minister for Sea Fisheries & Ors; Harper v Minister for Sea Fisheries

The case of *Harper v Minister for Sea Fisheries & Ors; Harper v Minister for Sea Fisheries* was heard in the High Court of Australia. The dispute concerned the validity of certain legislation, specifically the *Fisheries Act* and the *Coastal Waters Act*, and their relationship to the *Seas and Submerged Lands Act*. The applicants, represented by Sir Maurice Byers QC, argued for the validity of these laws, while the respondents included the Minister for Sea Fisheries, the Director of Sea Fisheries, and the State of Tasmania.

The central legal issues before the High Court were whether the *Fisheries Act* and the *Coastal Waters Act* were validly enacted laws of the Commonwealth Parliament. Specifically, the applicants contended that these laws were supported by the external affairs power (section 51(xxix) of the Constitution) and, alternatively, by the incidental power (section 51(xxxix)) in conjunction with the executive power (section 61). The applicants sought to establish that the Commonwealth Parliament possessed the legislative authority to grant rights and responsibilities to the States concerning the territorial sea and its resources, even if those rights had a domestic effect.

The Court was required to consider the scope of the external affairs power, particularly whether it extended to matters geographically situated outside Australia and its application to the territorial sea as an aspect of Australia's external sovereignty. The applicants relied on previous High Court judgments, such as *New South Wales v The Commonwealth*, to argue that the power under section 51(xxix) could encompass matters beyond Australia's geographical borders. Furthermore, the applicants argued that even if the primary legislation (like the *Seas and Submerged Lands Act*) declared the domestic consequences of international sovereignty, section 51(xxxix) could be used to redistribute those consequences, allowing the States a greater role in the management and control of seabed resources. This redistribution, it was argued, could be supported solely by section 51(xxxix) in relation to legislative power.