Seasickness, like any other motion sickness, is caused by unusual movement. The tossing of a ship on rough seas upsets the relation between what the eyes see and what the balance mechanism of the inner ear (vestibular system) feels. The eyes adjust to the movement, while the inner ear does not. These conflicting signals result in uneasiness, belching, headache and sleepiness. The vestibular system also functions as part of the body’s mechanism for detecting poisons. So when it transmits false signals to the brain, it triggers vomiting as a remedial action. So, nausea and vomiting form a part of seasickness.
- Due to watching Baywatch!
- Because we get homesick.