Mal de mer is another way to say “seasickness.” It’s a particular kind of motion sickness that afflicts people traveling by water, and it causes dizziness and nausea (a word that actually means “seasickness” in Greek). Mal de mer is brought on by the rocking motion of a boat on the waves — although not everyone is affected by it. In French, mal means “bad” or “sick” and mer means “sea.” – Vocabulary.com I still carry around a plastic bag to catch the remnants of motion sickness. I have a son that would suffer from seasickness on the way to …