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 common shrimp (Palaemon affinis) is often seen darting about in rock pools. It has a semi-transparent body marked with lines of red and green, and conspicuous spots of orange and black on its leg joints and at the base of its tail.