Plastic pollution harms marine life through ingestion, entanglement, and habitat destruction. Microplastics accumulate in the food chain, impacting marine biodiversity and human health. Long-term effects include the degradation of ecosystems and the loss of critical species. Solutions include reducing single-use plastics, improving waste management systems, promoting biodegradable alternatives, and raising global awareness. Governments, industries, and individuals must collaborate to address this pervasive issue.