To engage in deep-sea mining or not to engage: what do full net cost analyses tell us?

If the full net cost of deep-seabed mining (DSM) is determined for different entities with a stake in DSM (e.g., countries, private companies, the public), would such analysis support DSM or not? We surveyed existing literature to lay the foundation for addressing this question. Although further work is needed before a conclusive determination can be made, preliminary findings suggest that DSM is unlikely to be appealing to most of the entities covered by this study if the full net cost of DSM is comprehensively considered.