by-catch

Definitions of by-catch
1

n unwanted marine creatures that are caught in the nets while fishing for another species

“thousands of dolphins and porpoises and whales are killed as part of the by-catch each year”
Synonyms:
bycatch
Type of:
marine animal, marine creature, sea animal, sea creature
any of numerous animals inhabiting the sea including e.g. fishes and molluscs and many mammals

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