A leaf sheep (Costasiella kuroshimae) is a tiny, adorable species of sea slug—or sacoglossan sea slug—that looks remarkably like a cartoon sheep or a leaf. Found in shallow tropical waters near Japan, Indonesia, and the Philippines, these creatures are famous for being one of the few animals in the world that can perform photosynthesis.

A Life Illuminated

genres:

Marine biologist Dr. Edie Widder undertakes a daring descent 3,300 feet below the ocean’s surface to document a mysterious bioluminescent phenomenon. Combining footage from her latest expedition with archival material from her pioneering career, the film explores her lifelong quest to illuminate the hidden wonders of the deep sea and highlights the importance of preserving its fragile ecosystems.