Our World
in Data

Nitrogen emissions per tonne of farmed seafood

Based on a meta-analysis of data from 1690 fish farms. Emissions are given in kilograms of nitrogen per tonne of edible weight. Chicken – the lowest-carbon meat – isshown for comparison.

OurWorldInData.org/fish-and-overfishing •

Source: Gephart et al. (2021).

Note: Negative emissions can occur when organisms filter excess nitrogen from the water, storing it in their tissue. This is then removed from the water system when they are harvested.

We use cookies to give you the best experience on our website.

By agreeing, you consent to our use of cookies and other analytics tools according to our privacy policy.