Valuation in the Deep Sea: • Relatively large number of valuation studies for coastal ecosystem services but few applied studies in the deep. • Number of studies that identify services in deep sea but do not value benefits derived. • Limited usage of ES valuation in initial assessment for MSFD • Used in EU MAES but more focused on services than values • Number of qualitative assessments of deep‐sea benthic ESs (Galparsoro et al., 2014 and Salomidi et al. 2012)