Some cruise ships are dirty from bow to stern while others are
more ocean friendly. The ships that are dirty can be dirty in
myriad ways. They emit pollution through the stacks as they burn
fossil fuels to run their engines and generate power. These
large vessels, sometimes called floating cities, create a
variety of waste, and often dump it directly into the oceans —
thousands of gallons of human sewage, oily bilge water,
hazardous waste, and gray water, which is water from sinks,
showers, and laundry. Luxury ships cruise waters all over the
world from Alaska to the Mediterranean, often sensitive
ecosystems and near-pristine waters, and restrictions on the
range of ocean dumping vary from strict to nonexistent. But you
can help lessen the impact of dirty cruise ships. 3 things you
can do to clean up cruise ships: 1. Select an ocean-friendly
cruise line if you decide to take a cruise. 2. Get involved with
groups working to encourage clean cruising. 3. Tell your friends
about this issue. Other great ways you c