Marine reserves are protected areas in oceans and seas where human activities, such as fishing and mining, are restricted or prohibited. These reserves aim to conserve marine biodiversity, allowing ecosystems to thrive and recover from overexploitation. By safeguarding habitats, marine reserves help maintain healthy populations of fish and other marine species. In addition to protecting wildlife, marine reserves can enhance local economies by promoting sustainable tourism and fishing practices. They serve as vital research sites for scientists studying marine life and the effects of climate change. Overall, marine reserves play a crucial role in preserving the health of our oceans and their ecosystems.