How do I prepare to not get seasick?

Here are a few tips to help ease the symptoms of seasickness:

Maintain your fluid intake. ...
Keep moving. ...
Stay on deck, even if it's raining, because the fresh air is often enough to speed recovery. ...
Carry a plastic bag. ...
Consider an over-the-counter medication to prevent or minimize motion sickness.

Do ear plugs help with sea sickness?

Try The Earplug Trick Simply insert an earplug into one ear; this fools the brain into ignoring signals from your ears and forces it to focus on signals being sent by your eyes. Sailors claim it works best if you plug the ear that is opposite to your dominant hand, such as your left ear if you are right-handed.