As demand for seafood grows, so does concern about the impact of fish farms on the marine environment. One
aquaculture practice tries to soften this impact by turning farm waste into more profit.
It’s called integrated multi-trophic aquaculture, or IMTA. The system starts with fish or shrimp and integrates
them, or farms them alongside, other marine species such as kelp or filter-feeding shellfish. The “multitrophic” part of IMTA means the organisms involved are from different trophic levels, or places on the food chain of the marine ecosystem.