When you mention tuna, most minds probably swim to the ubiquitous cans of the fish, or maybe a delectable piece of sashimi decked out with roe and wasabi.
But when Stanford biology professor Barbara Block contemplates tuna, her mind goes to images of bluefin tuna — the massive, speedy fish that regularly traverse oceans in a single year.
“Over a lifetime they might travel tens of thousands of miles,” Block said, flanked by California’s Monterey Bay.
Block is warning that the bluefin, once thought to be incredibly bountiful, is now facing peril because of decades of overfishing.
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