human
I want to learn more about the world's oceans. What are the most important issues facing them today?
assistant
The most pressing issue facing the oceans today is climate change, which is causing rising sea levels and warming temperatures that threaten marine life and habitats. Other major threats include overfishing, ocean acidification, plastic pollution, and industrial activities such as oil drilling. Additionally, there is a growing demand for seafood, leading to unsustainable fishing practices and an increase in bycatch (unintentional capture of non-target species). Finally, many countries lack adequate coastal protection measures, leaving vulnerable areas exposed to erosion and flooding.