Well, it seems that there is something wrong with your eyes. Because sometimes we could regard eye floaters as a sign of health hazard. Generally speaking, it is resulted from ageing as well as vitreous degeneration , and it may be one of the lasting impacts of some disease, such as glaucoma or cataract. Anyway, once get eye floaters, you should be alert and try to see a doctor in time.
The floating thing is translucent microparticles in your vision. Some are red corpuscles of the blood released from the blood vessels of the retina and float around the retina in the banding shape. Most floating things are some tiny particles of the vitreous body. There are two kinds of eye floaters, the physiologic eye floater and the pathologic eye floater, of which the former occurs mainly in the myopic and the aged while the latter can be caused by the hemorrhage of the eye ground, inflammation of the ocular conjunctiva and broken retina. I suggest you asking an ophthalmologist to examine thoroughly.