Photo -2

Photo -2. Compare this cross-section to the previous image. Notice the greater width of the outer band. This is because the first cross-section was from a bluefin tuna caught in June while the second was from a tuna caught in November. The wider area represents a long period of high food intake during summer/ autumn months. These images are greatly magnified.

Photo Category: Fisheries - Biological Oceanography
Photo Location: Atlantic Ocean, Bay of Biscay
Photo Date: 1985