Deep-Sea Dilemmas: Evaluation of Public Perceptions of Deep-Sea Mineral Mining and Future of Sri Lanka’s Blue Economy

Abstract

Seabed mining has gained widespread attention under the blue economy concept, offering economic opportunities while posing significant environmental risks. In Sri Lanka, where mining of seabed resources is growing, understanding public perceptions and preferences for seabed conservation remain crucial to ensure sustainable resource management. This study, therefore, represents the first empirical assessment of public preference and Willingness to Pay (WTP) for seabed conservation in Sri Lanka. A Discrete Choice Experiment (DCE)-based approach was employed to assess public preferences for seabed conservation. Data were collected from 630 respondents across Sri Lanka using a pre-tested self-administered structured survey. The analysis employed Conditional Logit (CL) and Random Parameter Logit (RPL) models to estimate preference heterogeneity and attribute trade-offs. The findings of the study reported strong public support, with a WTP of Sri Lankan Rupees (LKR) 3532 per household per year for seabed conservation. Younger, well-educated individuals demonstrated a significantly higher preference for seabed conservation. Biodiversity loss (66.9%), physical damage to seabed (40.7%) and exploitation of natural resources (17.8%) were recognized as major consequences of sea bed mining, highlighting the need for stringent regulatory frameworks (34%) and public engagement (44%) in sustainable seabed conservation. The RPL model revealed significant preference heterogeneity for key attributes. A significant positive preference for a 30% reduction in mineral extraction (coefficient = 0.894, p < 0.05) reinforces public preference for stricter extraction limits. A 25% reduction for biodiversity and habitat destruction (coefficient = 0.010, p < 0.05) reflects public concern for seabed conservation in the context of ongoing marine resource related economic development activities. These results underscore the importance of integrating economic valuation into seabed conservation policies, ensuring that seabed mining activities align with sustainability goals. The study suggests targeted awareness campaigns, financial incentives, and inclusive policymaking to bridge socio-economic disparities and foster long-term public support for seabed conservation. These insights provide a critical foundation for policymakers to develop balanced approaches that promote economic benefits, while safeguarding marine ecosystems within Sri Lanka’s blue economy framework.