“Revolution,” the latest film by globally celebrated director Rob Stewart, serves as a sequel to his acclaimed documentary “Sharkwater.” This new installment follows Stewart on an extraordinary quest, revealing that the issue he initially perceived as a threat to sharks is, in fact, a broader human crisis. As his mission to protect sharks intensifies, Stewart discovers significant threats that endanger not only marine life but also humanity itself. Determined to uncover the truth and find a way to safeguard our species, Stewart embarks on a perilous journey across 15 countries, a project that took over four years to complete. During this time, the context of oceanic challenges has shifted dramatically. Efforts to save sharks will be futile if we continue to lose other vital oceanic elements. The burning of fossil fuels is releasing carbon dioxide, which is altering oceanic and atmospheric chemistry and impacting our climate.