Cruise ships are notorious for polluting the ocean, and Carnival and Royal Caribbean are some of the worst offenders

MSC Cruises: 0

Average: 0

Crystal Cruises: 0

Average: 0

Celebrity Cruises: 3

Royal Caribbean International: 2

Silversea Cruises: 2

Average: 2.33

Royal Caribbean did not immediately respond to a request for comment.

Norwegian Cruise Line: 4

Oceania Cruises: 1

Regent Seven Seas Cruises: 2

Average: 2.33

Disney Cruise Line: 10

Average: 10

Have you worked on a cruise ship? Do you have a story to share? Email this reporter at mmatousek@businessinsider.com.

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• Carnival and Royal Caribbean paid their median employee less than $20,000 in 2018