As summer arrives, fevers of stingrays glide into the sandbanks along the island’s northwest shore, preparing for the arrival of their pups in autumn - but they’re not alone. Drawn by the promise of an easy meal, hammerhead sharks prowl the waters, undeterred by the stingrays’ sharp barbs. Fortunately, finless soles drifting through the shallows release a chemical that irritates the sharks’ gills, helping to keep the stingrays and their young safe. As each team performs the island’s annual stingray census, they will watch this dramatic spectacle unfold - how will the population fare by the end of the season?