Beneath the emerald waves of the Hidden Lagoon, where sunlight fractured into prismatic shards, two sharks once ruled in harmony. Kael, the guardian of the lagoon, was a hulking tiger shark with eyes like storm clouds, his fins etched with ancient markings that pulsed with bioluminescent energy. Beside him swam Zyla, a sleek and silver manta ray, her wings trailing stardust. Together, they protected the Heart of the Tides —a portable, glowing orb said to hold the ocean’s memory and power, sealed in a coral reliquary at the lagoon’s center.