What is one of the key roles of scuba divers and snorkelers in relation to the aquatic environment?

Establishing underwater parks is an essential role of scuba divers and snorkelers because these areas serve as critical habitats for marine life and help in the conservation of biodiversity. By participating in the creation and support of underwater parks, divers and snorkelers contribute to preserving ecosystems, protecting fish populations, and maintaining the health of marine environments. These parks can provide safe havens for species that are threatened by overfishing, habitat destruction, and pollution.

Additionally, underwater parks can serve as sites for research and education, allowing divers and snorkelers to engage with the aquatic environment in a sustainable way that promotes awareness and appreciation for marine conservation. Through their activities, divers and snorkelers can also help monitor the health of these ecosystems, identifying areas in need of protection and contributing to conservation efforts. This positive engagement with the aquatic environment contrasts significantly with the other options, which either focus on land-based issues or suggest detrimental effects on marine life.