Cruise ships are pretty big polluters, yes. Cruise passengers have about 8x the emissions that they’d have from a comparable land-based vacation.

But when people talk about ship pollution, they’re usually talking about non-carbon pollution.

For example, ships often burn heavy fuel oil, which produces tons of sulfur dioxide, which causes acid rain, and NOX, which depletes the ozone and causes smog and asthma.

Cruise ships are bad for the environment, but there’s honestly bigger fish to fry. Gas power plants are way, way worse for the planet.