Table 2. Summary of data availability, system understanding, and management/governance regime in the Baltic Sea compared to other coastal areas worldwide.

Green coloration in the heat map indicates good scientific knowledge/effective management/governance structures, red denotes the opposite, and yellow indicates intermediate. For full documentation on how scores for each system and parameter were obtained, including all references underlying the assessment, see data S1.

System	Research activities	Monitoring activities	Data availability for fish stock assessments	Governance structure
Baltic Sea
North Sea
Mediterranean Sea
Black Sea
Gulf of Mexico
East China Sea
Barents Sea