On the Trail of Mercury in the Ocean

"I returned from Hawai’i in mid-December with 700 bottles of seawater. The bottles hold what I hope are solutions to an abiding mystery. In the middle of the ocean, waters at depths ranging from 100 to 1,000 meters contain high concentrations of the toxic form of mercury that accumulates in fish. Nobody knows why it’s there or where it comes from."

Read more in this Oceanus magazine article.