What makes some bodies of water around the world clear as swimming pools compared to the majority of water around the world?

Question

What makes some bodies of water around the world clear as swimming pools compared to the majority of water around the world?

In: Earth Science

Answer 1

Warmer ocean water generally has fewer microorganisms suspended in it than colder water, which is part of the reason tropical waters usually appear turquoise and clear while the waters off the coast of Maine and northern Europe appear dark and opaque. There are other factors to consider as well such as currents, sediment, and other pollutants, but that’s the gist of it.