A modification of the Kobe plot by WCPFC where the status of key tuna stocks is displayed in terms of biomass depletion relative to unfished spawning biomass (SSB/SSBF=0) instead of to SSBMSY, while fishing mortality remains relative to FMSY (F/FMSY). Key reference points are the WCPFC-agreed biomass limit reference point of 20%SBF=0, and FMSY.
