The Ocean Decade – officially the UN Decade of Ocean Science for Sustainable Development (2021-2030) – is generating new marine research, advancing ocean solutions and celebrating our connection to the ocean. The global initiative seeks to revolutionise ocean science and support a productive, resilient, safe and sustainable ocean. It was established in response to the lack of scientific data referring to the ocean, particularly in relation to certain regions and countries. As we are more than halfway through the 2020s, it now seems appropriate to take stock of the Ocean Decade’s goals and progress.

In this episode, Alison Clausen, Deputy Coordinator of the Ocean Decade (pictured above), shares her updates and thoughts about the importance of the ocean in a world where it is too often neglected in policy and media circles. Speaking from UNESCO’s headquarters in Paris during the height of a European heatwave in late June 2026, Alison explains how the ocean is being affected by climate change, but how it can also help address climate change. She describes how the health of the ocean is increasingly gaining public attention, in part due to the release of David Attenborough’s blockbuster nature documentary Ocean.

The value of studying past energy transitions, particularly in the global south, is highlighted during a discussion about the Sail to Steam, Carbon to Green project, funded by Lloyd’s Register Foundation, at the University of Portsmouth. Alison reflects upon how lessons need to be learned from the past to chart more sustainable pathways forward, and upon the urgency of saving the ocean, especially as coastal communities have shown how it is changing and being damaged.

The Port Cities and Maritime Cultures podcast series is presented by Dr Guy Collender, of the Centre for Port Cities and Maritime Cultures at the University of Portsmouth.

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The invention and rise of steamships in the nineteenth century can provide valuable lessons for today’s shift from fossil fuels to green alternatives in the maritime sector. In this episode, History PhD scholar Carlos Ausejo discusses how the Peruvian port of Callao changed because of the switch from sail to steam, and how these insights can help steer policy today. He shows how technological change and the demand for coal had a major impact on the workforce, and the infrastructure of the port city. Carlos, from the Peruvian capital Lima, also describes his family’s own connections with nearby Callao. His great-grandmother was a pioneering woman as she worked in the masculine world of the port as a broker, buying and selling goods.

In this episode, Carlos shares his enthusiasm for studying at the University of Portsmouth, his affection for his new seaside home, and his interest in Portsmouth Historic Dockyard – his favourite place in Portsmouth. Carlos’ scholarship is funded by Lloyd’s Register Foundation as part of its support for the Sail to Steam, Carbon to Green research project at the Centre for Port Cities and Maritime Cultures (PCMC) at the University of Portsmouth.

The discussion in this episode also refers to an earlier interview in this podcast series with Dr Charlie McKinlay, Fuels and Technology Lead at Lloyd’s Register Maritime Decarbonisation Hub, in which he shared his thoughts about the multi-fuel future of the maritime sector (including ammonia, hydrogen and wind assistance).

The Port Cities and Maritime Cultures podcast series is presented by Dr Guy Collender, of PCMC.

Hosted on Acast. See acast.com/privacy for more information.

The dangers and mysteries of the Atlantic have inspired compelling and supernatural tales of sea monsters, mermaids and ill-fated ships. In this episode, Dr Karl Bell, Associate Professor of Cultural and Social History at the University of Portsmouth, shares research from his new book about the creation and purpose of such maritime folklore, and how it evolved during the technological transition from sail to steam. His book is called The Perilous Deep: A Supernatural History of the Atlantic. The hardback publication can be bought online from Reaktion Books for £18.

Dr Bell, Co-director of the Centre for Port Cities and Maritime Cultures at the University of Portsmouth, also speaks about his involvement in the Sail to Steam, Carbon to Green project funded by Lloyd's Register Foundation. In addition, he outlines the opportunities to study History at the University of Portsmouth this autumn, including the MA Victorian Gothic: History, Literature and Culture MA, which he leads.

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