Cenotes, reefs, mangroves, and jungle are fragile, living ecosystems, not backdrops. Simple habits make a real difference: using reef-safe sunscreen, never touching or removing coral or cave formations, packing out your own trash, and following posted guidance at natural sites, even when it's inconvenient.
If you're settling in long-term, consider how your household's water use, waste, and energy habits fit into a region where fresh water in particular is a genuinely limited resource.