Fishermen Ed Stewart (left) and Tannis Goodsen mend groundfishing nets on Merrill Wharf, in Portland, Maine, last November. Robert F. Bukaty/AP hide caption

itoggle caption Robert F. Bukaty/AP

A fisherman pulls a basket filled with anchovies aboard a fishing boat off of Peru's northern port of Chimbote, in 2012. Peru is the world's top fishmeal exporter, producing about a third of worldwide supply. Enrique Castro-Mendivil/Reuters/Landov hide caption

itoggle caption Enrique Castro-Mendivil/Reuters/Landov

This Vivace "no-kill" caviar was harvested from a Siberian sturgeon via a massage-based technique. The fish didn't die. But did the taste survive? Alastair Bland for NPR hide caption

itoggle caption Alastair Bland for NPR