The park seeks the cooperation of visitors and tour operators to take care of the sea. Please do not let plastic of any kind fall into the sea. Plastic is a very harmful substance. If decomposes into small particles which concentrate pollutants in the sea, such as DDT. Plastic kills marine life. Many seabirds that breed on or near coral islands die from swallowing plastic. Also, turtles die when they eat plastic beg because they look like jellyfish in the water.