Human: I'm a scuba diver. I want to know if the ozone hole is affecting the marine life in the ocean. Assistant: 
The ozone layer absorbs some of the harmful ultraviolet radiation from the sun, protecting life on Earth from its damaging effects. However, this protective shield has been thinning due to human activities such as burning fossil fuels and industrial chemicals, which release compounds that break down the ozone molecules. This process can lead to an increase in UV-B radiation reaching the surface of the earth, which may have negative impacts on marine ecosystems.