Oil is a complex compound of hydrocarbons where the largest share in them is hydrogen and carbon. In contact with the sea, the oil undergoes a number of different physical and chemical changes. Oil pollution of the sea and its prevention is one of the main aspects for research in the maritime world. As much as pollution prevention has improved throughout history, it still appears today. That is why certain measures have been introduced, starting from the legal aspect, all the way to technologies that enable prevention and disposal in the event of marine pollution. From the legal point of view, there are international agreements regulating the trade in oils. If a spill occurs then it relies on technology to remove oil from the sea. One way to prevent further spread is by positioning the dam with respect to the location of the stain, the direction of the current, and the wind. The next step is to remove through a collector, dispersant or substance that can absorb a certain amount of oil and if necessary, the method of burning oil from the sea surface can be applied. Oil collected after an accident and not contaminated with other substances can be returned for reuse.