Fact 1: Marine species live mainly in shallow coastal waters.

Fact 2: Most marine organisms live near the surface.

Given the two facts above, answer the question "Most organisms live mainly in" with the following options: 
- shallow coastal waters
 - the environment
 - soil
 - trees
 - Earth orbiting the Sun
 - ocean water
 - plasma
 - salt and water.


 

 shallow coastal waters        