The calculation of the number of marine animals killed for consumption can only be approximated. There are so many marine animals caught that they are counted only in tons.
There are numerous different marine animals that are killed for the consumption of their flesh. The calculator groups the most frequently killed species in Germany into three categories:
- "Food fish" for direct consumption. These are saltwater fish such as Alaskan salmon, salmon, herring and tuna, as well as freshwater fish such as pike, trout, carp and eel. Considered are the 18 most common "food fish", incl. "other".
Small fish processed into fishmeal and fish oil and used for aquaculture and land animal feeding. These are mainly anchovies, capons, sprats and sandeels.
- Crustaceans, mussels and molluscs for direct consumption.
Illegal catch and bycatch for "food fish" is estimated at 27%. For small fish, crabs, mussels and molluscs, bycatch is up to 570%.
The extrapolation of consumption over several years takes into account the historical development of average consumption. The individual average consumption can also be adjusted with regard to a subjectively experienced consumption pattern that differs from that of the average citizen.