
Your semicircular canals sense rotation, and otolith organs detect linear acceleration, but your eyes can report stillness below deck. The brain resolves the contradiction by activating nausea pathways, a protective misfire. Step outside, anchor your gaze on the horizon, and reduce conflict by aligning visual and vestibular information.

Dehydration, alcohol, heavy or greasy meals, diesel odors, anxiety, overheating, and reading on phones all amplify motion sensitivity. Adjust small variables: sip water, choose bland snacks, cool your face, avoid fumes, and engage your body with gentle tasks so your senses synchronize rather than clash.

Most people adapt within one to three days as the brain recalibrates to maritime motion. Short practice trips, sleeping aboard at dock, and starting with lighter conditions accelerate habituation. Celebrate small wins, track what works, and expect gradual improvement rather than instant transformation during successive outings.