On an open sea deck, with the rolling waves of Georges Bank a mere eight feet away, Jon Brodziak cuts, and with tweezers takes a bone from each of the two inner ears of a haddock.
He places them in a small envelope for future study.
Then he does it again with another haddock. And again.
The bone is the otolith, which is used to tell the age of the fish; it is a far better measure than length.
Mr. Brodziak, along with several other scientists, is in the middle of a six-hour shift on the Albatross IV, in the pitch black night on the open ocean.