More than 4.8 million tonnes of tuna worldwide were caught in 2015: 58% was skipjack tuna, followed by yellowfin (28%), bigeye (8%) and albacore (5%). Bluefin tuna accounted for 1% of the global catch.
76% of the world’s tuna catch comes from stocks that are a "healthy level of abundance." Yet all tuna need protection from overfishing. Visit our site to explore the status of all tuna stocks.
There are 23 commercially fished tuna stocks of skipjack, yellowfin, bigeye, albacore and bluefin. This map highlights how much tuna is fished in each ocean region. The bigger the circle, the bigger the catch.
The governments of fishing nations collectively manage all stocks of tuna. Learn about these regional management bodies or "RFMOs."
In terms of how vessels fish, 64% of the catch is made by purse seining (nets), 12% by longline vessels and 9% comes from pole-and-line vessels. The rest comes from less-common fishing gears. All fishing methods can lead to bycatch, however, and we have rated each for its environmental impact. ISSF is working with scientists and fishing experts on projects that address these challenges.
This method typically results in small bycatch rates, ranging from this 0.03%-2.8% of a vessel’s catch, depending on the ocean region.*
This method has a high bycatch rate: bycatch is more than 20% of a vessel’s catch.*
Purse seining on FADs has bycatch rates ranging from 1.75%-8.9% of a vessel’s catch, depending on the ocean region.*
This method has no major concerns with the catch of vulnerable non-target species. However, this method requires the use of live baitfish, and the effects of fishing on these populations are largely unknown.
No single step will create sustainable tuna fisheries. Instead, coordinated efforts over time are necessary in all oceans where tuna is fished.
Many companies in the tuna industry are committed to partnering with ISSF to make continuous improvements. We’ve also identified a series of practices or “conservation measures” that all tuna fishing vessels should be working toward implementing.
You can track the best practices of leading tuna fishing vessels right now, through our ProActive Vessel Register.
nation involved in tuna
transship at sea
on FAD use to RFMO scientists
in shark finning
and has an
on any IUU (illegal, unreported and unregulated fishing) list
observer on board
* ISSF 2011-03: Questions and Answers about FADs and Bycatch
The Status of the Stocks Report