Effective number of white shark ( Linnaeus) breeders is stable over four successive years in the population adjacent to eastern Australia and New Zealand.

Population size is a central parameter for conservation; however, monitoring abundance is often problematic for threatened marine species. Despite substantial investment in research, many marine species remain data-poor presenting barriers to the evaluation of conservation management outcomes and the modeling of future solutions. Such is the case for the white shark (), a highly mobile apex predator for whom recent and substantial population declines have been recorded in many globally distributed populations.