bluefin tuna

Penned In

http://photography.nationalgeographic.com/photography/photo-of-the-day/


The fast and powerful bluefin tuna
is among the most overfished species on Earth.


Here, bluefin in an undersea pen in the Mediterranean
are fattened for the booming sushi market.


These fish were taken from the wild,
reducing the potential breeding population.


bluefin tuna :《魚》クロマグロ、本マグロ