The "Deep Sea Challenge" is an exploration mission aimed at studying the deepest parts of the ocean. It was led by filmmaker and explorer James Cameron, who piloted a specially designed submersible called the Deepsea Challenger. This mission took place in 2012 and reached the bottom of the Mariana Trench, the deepest known point in the Earth's oceans. During the expedition, the team collected valuable data and samples from the ocean floor, contributing to our understanding of deep-sea ecosystems. The mission also highlighted the technological advancements in deep-sea exploration, showcasing the capabilities of modern submersibles in extreme environments.