This animation explains the meaning of the Environmentally Hazardous Substances (Marine pollutant mark). When you ship or transport goods that are classified as hazardous to the environment, you must show this mark.
Correctly labeling packages and/or vehicles carrying dangerous goods can’t eliminate the danger of pollution, but it certainly can help to limit the damage as the intervention teams will immediately know how to intervene to reduce the environmental damage. Respect the environment and the Regulations.. .. label your dangerous goods always!