Ocean pollution refers to the introduction of harmful substances into the ocean, which can negatively impact marine life and ecosystems. Common pollutants include plastic waste, chemicals, and oil spills. These materials can harm fish, birds, and other wildlife, disrupting their habitats and food sources. The sources of ocean pollution are varied, including industrial runoff, sewage discharge, and littering. Plastic waste, in particular, poses a significant threat, as it can take hundreds of years to decompose. Efforts to reduce ocean pollution involve improving waste management, promoting recycling, and raising awareness about the importance of keeping our oceans clean.