NOVA

S43E14 Creatures of Light

On a magical summer evening, the enchanting flicker of fireflies captivates many. However, beneath the ocean's surface, a far more dazzling spectacle unfolds—approximately 90% of marine species emit their own light. This bioluminescence serves various purposes, such as deterring predators, attracting prey, and enticing mates. In collaboration with National Geographic, NOVA embarks on an illuminating expedition into this hidden underwater realm, where creatures twinkle and glow. Join marine scientists as they explore these mesmerizing displays and uncover innovative applications of natural light, including tracking cancer cells, monitoring pollution, illuminating urban areas, and revealing brain functions.