Usually it's chalked up to dizziness, but dizziness is a broad term that can mean different things to different people. It's a common complaint, but it can be serious. Vertigo . The feeling of motion when there is no motion, such as you spinning or your environment spinning.
Shrimp definition, any of several small, long-tailed, chiefly marine crustaceans of the decapod suborder Natania, certain species of which are used as food. See more. Dictionary.com
The shrimp has an eye of the refracting superposition type, in the rear behind this in each eye there is a single large facet that is three times in diameter the others in the eye and behind this is an enlarged crystalline cone.