A single cruise ship produces more pollution than some entire nations.

Cruise ships operate with minimal regulatory oversight in many important sectors, such as food safety and what to do with wastewater.

They disrupt the view (look up pictures of cruise ships in Venice).

The wake from these ships damages property and endangers the lives of swimmers.

They destroy natural habitats and the noise they generate disrupts undersea life.

They are playgrounds for the rich.

The people that go on cruises are disruptive wherever they land.

Very polluting, and things you can do on a cruise ship you can do on land.