At Africa’s southern tip, where the warm Agulhas and cold Benguela currents meet, Apex Alley forms a vital marine corridor for diverse shark species and ancient migrations. The documentary follows sharks from Mozambique’s breeding grounds to Cape Town’s kelp forests, highlighting their remarkable adaptability and a record 6,500-kilometre journey between oceans. As overfishing and climate change threaten this ecosystem, advanced tracking and conservation efforts reveal the crucial link between ocean currents and shark survival.