Who’s Peeing in the Global Pool?

Compiling more than 10,000 lines of data on the waste products of aquatic animals, from lake trout to pond insects to ocean shellfish, was more time-consuming than the ecologist Michael Vanni expected. But he didn’t mind. “I love data on fish pee,” he says.

https://www.theatlantic.com/science/archive/2017/04/fish-pee/522684/