What are the different types of marine pollution?

There are many factors that can cause ocean pollution. A main one is humans. People tend to dump or litter garbage / waste into the ocean. Acid rain falling (due to pollution elsewhere that got mixed in and moved along with the atmosphere) can create acidic ocean waters. Polluted run-off from water sources (rivers, streams, groundwater, and pipe lines) can easily and quickly bring pollutants into the ocean water. Ship spills (especially oil tanker spills) also majorly pollute the oceans.