Tuna, Atlantic Bluefin (Hon Maguro) Atlantic Bluefin Tuna is the
largest tuna species and one of the largest fish in our oceans,
growing to 1543 pounds and over 13 feet in length. At least
three populations exist in the Atlantic (western and eastern)
and Mediterranean Sea, and after decades of exploitation all
populations are considered overfished. The overall abundance of
Atlantic Bluefin tuna is at a critical level and effective
management and conservation goals are needed to protect the
remaining fish. Fishers use surface gears, typically rod and
reel, longlines and purse-seines to target this highly valuable
species. Little is known about bycatch associated with directed
Atlantic Bluefin Tuna purse-seine fisheries, but tuna longline
fisheries catch high numbers of finfish, sea turtles, and
seabirds. This fish may have high levels of mercury and PCBs
that could pose a health risk to adults and children. More
mercury and contaminant info here.