Pollution must be mentioned as a real threat to all marine food production, both because of concerned consumers and potential harmful effects of polluted products on human health, but also the direct effects pollution may have on the marine biota.
(Pollution; must be mentioned; as a real threat to all marine food production) (the direct effects pollution; may have; on the marine biota)
Pollution the direct effects pollution
must be mentioned may have
as a real threat to all marine food production
on the marine biota