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About me

Image of Rapti Siriwardane


Dr. Rapti Siriwardane-de Zoysa (Ria)

Raised between Abu Dhabi, Colombo, and Singapore, I’ve always been drawn to thresholds such as coastal edges, transit zones, and liminal spaces in between. This early sense of drift continues to shape how I work on cultural ecologies and histories across the Indian Ocean and Asia-Pacific.

Bearing in mind the intersecting logics of empire and development, my research asks how knowledge, identity, and belonging are made and unmade through uneven ecological relations. A core concern running through my work is whose ways of knowing and living are recognised, dismissed, or rendered peripheral in framing crises, flourishing, and projects of repair. These threads come together across four thematic areas: intertidal worlds, affect and epistemic justice, multispecies labour, and climate solutionism.

I am currently completing my habilitation, Haunting the Developmental Sea, based on seven years of ethnographic research in the Indo-Malay-Philippine archipelago. This work examines the interplay of epistemic and infrastructural dependence in semi-submerged and toxified land/seascapes, tracing the afterlives of extraction, overbuilding, and abandonment. It centers a cast of mobility agents such as coastal dwellers, restless ancestors, sediments, mangroves, milkfish, infrastructural ruins, spectral jasmine, and maritime cargo -whose movements shape what the sea returns, and what it holds as submerged archive.


Dr. Rapti Siriwardane-de Zoysa (Ria)

Raised between Abu Dhabi, Colombo, and Singapore, I’ve always been drawn to the spaces in between. This sense of drift and crossing continues to shape how I approach my work as a writer, anthropologist, and lecturer exploring cultural ecologies in the Indian Ocean world and the Asia-Pacific.

I am particularly interested in how intersecting logics of empire and development continue to shape coastal and urban frontiers—and how precarity itself is imagined, disavowed, and differently valued across these spaces. In continually asking whose knowledge counts in defining environmental crisis and why, these inquiries guide my research across four thematic areas: intertidal worlds, epistemic justice, multispecies relations, and speculative infrastructures.

I hold a joint appointment at the Bonn Center for Dependency and Slavery Studies (BCDSS) and the German Institute of Development and Sustainability (IDOS), where I coordinate the partnership programme and co-lead the research group POESIS (“Power, Equity, and Epistemic Dependencies in Oceanic Spaces”). I also serve on the editorial boards of a new Springer book series Marine Social Sciences and the Blue Humanities, together with the journals Ocean and Society and Maritime Studies.

I’m presently completing my habilitation project, Haunting the Developmental Sea, based on seven years of ethnographic research in the Indo-Malay-Philippine archipelago. This work explores the interplay of epistemic and infrastructural dependencies in semi-submerged landscapes, focusing on ghostly afterlives in the wake of littoral extraction, overbuilding, and abandonment.

Image of Rapti Siriwardane

I was previously based at the Leibniz Centre for Tropical Marine Research (ZMT), where I taught anthropology and sociology at the University of Bremen (2015-2023). During this time, I co-led DFG, US SSRC and Leibniz-funded projects with collaborators across the Dutch Caribbean, Malaysia, Indonesia, India, the Philippines, Singapore, and Sri Lanka.

My last transregional collaborative project, BlueUrban (DFG-funded, 2020–2023), examined how land reclamation, seawalls, and urban adaptation transform social relations between cities and seas in the Indo-Malay-Philippine archipelago. The focus was on modernist visions of floating infrastructural futures and their contested meanings for coastal communities, alongside the politics of oceanic privatisation and waterfront development.

Beyond academia, I’ve worked with organisations including the Climate Secretariat (Bonn), CGIAR-WorldFish Centre (Penang), the Alola Foundation (Timor-Leste), and Singapore’s National Youth Council. 

Contact: rsiriwar “at” uni-bonn.de