This document discusses the threats facing marine life from global warming, overfishing, and human activity. It describes how harp seal habitats are being melted by climate change and how they are hunted. It also notes that 90% of big fish have disappeared due to overfishing, and that sharks, whales, and other sea creatures are endangered by entanglement in fishing gear and collisions with boats. The document highlights both the beauty of the oceans but also the horrible and tragic stories of the environmental challenges facing marine species.