Dr Haymet's leadership, at CSIRO and SCRIPPS Institution of Oceanography, focused on building marine and climate science capability, initiating globally significant collaborations, and strengthening national and global research partnerships. He co-founded Australia's Integrated Marine Observing System, the Western Australian Marine Science Institution, CSIRO's Wealth from Oceans Flagship, and the Quantitative Marine Science Program with UTAS. He has championed diverse workplaces and the value of experimental data, actively communicated science through the world, and founded two for-profit companies, and a 'charity' in Clean Technology.