Appendix S1. Energy density values (KJ/g) were identified for the following list of prey items and were used to estimate the supportive contribution of cephalopods to fishery landings and landed values in 28 global marine ecosystems. References for the energy density values can be identified by their source code at the bottom of the appendix.

Appendix S2. List of peer-reviewed publications, reports, and theses from which predator food habits data were obtained for each ecosystem analyzed in the present study.

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