An important point is that responders can potentially clean up what is on top of the water but recovering oil droplets from the water column is practically impossible. This is why it is so important to spill responders to receive accurate predictions of the movement of the surface slicks so they can quickly implement cleanup or prevention strategies.

and the most important is you should call trusted party to deal with.

Cleanup crews must have specific safety training, skill sets,
qualifications and certifications to ensure the
safety of the spill site. Additionally, those working
within the oil-affected areas are required to wear
specific personal protective equipment. Safety and
health officials are also on-scene monitoring oil
spill response activities.

When oil is released into the water, it can cause harm to marine animals and the environment. Oil contains thousands of chemical compounds. Polycyclic aromatic hydrocarbons  or PAHs as they are commonly known, are a class of oil compounds that have been associated with toxic effects in exposed organisms. Because of this, scientists frequently study PAHs in spilled oil to gauge the oil’s potential environmental impact.