floaters

noun
  1. Small specks or threads that appear to drift across the field of vision, caused by particles in the eye's fluid.
  2. Usage: medical/anatomical; usually plural
  3. Objects or people that float or remain suspended on or in water.
  4. Usage: general use; plural of floater
  5. Workers who move from job to job or place to place rather than staying in one position.
  6. Usage: informal; occupational

Examples