Recordings of ship noise were analysed to build a catalogue of ship noise signatures in Australian waters, including source spectra and source levels. The data described by this record is derived from an initial set of five deployments by the Integrated Marine Observing System (IMOS) acoustic observatories.

This record provides an overview of the scope and research output of NESP Marine Biodiversity Hub Project E3 - "Microplastics in the Australian marine environment". No data outputs are expected for this project. -------------------- A literature review will firstly identify key marine microplastics research and policy development internationally, with a focus on research that is contextual to microplastics in the Australian marine environment From this literature review, an options paper will be developed to explore the most feasible and impactful policy approaches for the Australian context to reduce both intentionally added and not intentionally added microplastics in the marine environment (it would be beneficial to understand the policy options that can address both categories of microplastics because the options are different). These two reports would form the basis of a one day workshop that will draw together policy-makers, researchers and relevant industry peak bodies to discuss and recommend policy and other options to limit the release / impact of microplastics in the environment. A workshop report will be drafted to summarise findings, recommendations, and next steps (including identifying gaps in both science and policy will inform any future work required). The report will provide evidence to underpin the development of national policy aimed at reducing microplastic pollution, including by identifying priority actions to deliver Australia’s 2018 National Waste Policy .

Over the past century there have been significant global increases in anthropogenic underwater noise from a range of sources, such as commercial shipping, oil and gas exploration, recreational and military sound sources. Anthropogenic noise has been demonstrated to impact marine animals, in particular marine mammals that rely on sound for communication, foraging, and navigation. Sound exposure may impair hearing mechanisms temporarily or permanently, with impacts ranging from temporary behavioural responses and stress, to longer term habitat avoidance, hearing loss, or mortality. Commercial shipping is thought to contribute to a significant portion of the underwater noise generated by human activity, driven by marine transport network expansion, urbanization, and greater demand for natural resources. This project aimed to quantify underwater noise from ships in Australian waters, with the ultimate goal of guiding the management of noise impacts on marine fauna. This record describes a gridded map of cumulative sound exposure from shipping in the Australian EEZ for a typical April-September period.

Map of cumulative sound exposure from shipping in the GBR for winter 2015 (June-September).