Catch: Top Predators (IMAGE)

University of Washington

Catch: Top Predators

Caption

If humans were fishing down the marine food web then catches of top predators, at trophic levels 3.5 and above, would be decreasing. But catches at those levels have generally increased according to newly compiled information. Named next to each trophic level is the species most often caught, for example bigeye tuna is the most often caught fish at level 4.5. The wider the line, the more fish are being caught at that trophic level.

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Trevor Branch/U of Washington

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