This document discusses the threats facing marine life from global warming, overfishing, and human activity. It describes how harp seal habitats and populations are declining due to climate change and hunting. It also explains that overfishing has led to a 90% decline in large fish over 50-60 years, with huge amounts of bycatch discarded daily, and 100 million sharks killed for their fins and meat. The document concludes by noting the threats whales face from entanglement in fishing gear and collisions with boats.