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This paper contributes to discourse about complex disasters by applying cultural lenses to the study of coastal infrastructure (such as seawalls and dikes), thus departing from studies that focus on characterising, assessing, and predicting the physical resilience of hard structural forms that dominate knowledge about coastal infrastructure.

This ethnographic study nuances Philippine coastal infrastructure through examining the material registers of a seawall bordering an island inhabited by artisanal fisherfolk. By “material registers”, this research refers to the socially informed ways of regarding and constructing material configurations and how the latter are enacted and resisted. Data collection was accomplished through focus groups with community leaders, on-site and remote interviews with homeowners, and archival research to further understand the spatial and policy context of the structure.

The discussion focuses on the seawall’s three material registers (protection, fragility, and misrecognition) and reveals how infrastructure built for an island community of fisherfolk simultaneously fulfils, fails, and complicates the promise of disaster resilience.

This research demonstrates the potential of “material registers”, a term previously used to analyse architecture and housing, to understand the technopolitics of infrastructure and how materially informed tensions between homeowners' and state notions of infrastructure contribute to protracted experiences of disaster and coastal maladaptation.

This research signposts the need for disaster risk reduction, climate adaptation, and sustainable development policies that legitimize the construction of infrastructure to recognize the latter's relationship and impact on multiple sphere of coastal life, including housing and citizenship implications.

This research highlights how infrastructure for coastal disaster risk management implicates geographically informed power relations within a community fisherfolk and between their “small” island community and more politically and economically dominant groups.

Whereas studies of coastal infrastructure are focused on quantitative and predictive research regarding hard structural forms in megacities, this study apprehends disaster complexity through examining the cultural and contested nature of infrastructure for coastal flood management in an island community of fisherfolk.

Prior research suggests that collaboration is key to sustainable community development and environmental management, and peer-to-peer learning (P2PL) may facilitate community building and collaborative learning skills. This study aims to examine the effect of P2PL on the enhancement of environmental management and sustainable development skills, community building and social capital (i.e. connectedness) and understanding of course learning objectives.

Quantitative and qualitative longitudinal survey data was collected in a sustainable development focused course offered at a large American public university that uses P2PL to explicitly facilitate community building and collaborative skills. Safety precautions and changing locational course offerings due to the COVID-19 pandemic in years 2020, 2021 and 2022 provided an opportunity to evaluate the impact of P2PL on these skills during both virtual and in-person formats. Additionally, this study compared in-course student evaluations with students taking other sustainable development-related courses with collaborative learning aspects to understand the wider effectiveness of this course structure.

This study finds that course format (virtual vs in-person) overall made no difference in either connectedness or conceptual understandings, and that students in both formats felt more connected to others than students taking other courses with P2PL. Scaffolding P2PL and supplemental peer support can yield improved connectedness and learning among students taking environmental coursework.

Sustainable development requires group collaboration and partnership building skills. Issues are consistently raised about the challenges to teaching these skills in higher education. The students and instructors in this research study identify P2PL strategies to address these challenges for in-person and virtual classroom settings.