Confirmed: Fish pee is essential to maintaining coastal ecosystems

Researchers from the University of Washington and North Carolina State University figured out the ratios of chemicals and excretion the ecosystems need to survive. In a new study published in the journal Ecological Monographs, the scientists detail how a loss of fish biodiversity could impact larger ecosystems as a whole.

Without fish diversity, coral reef environments would be less healthy, Phys.org reports. And without a variety of fish species, the nutrient levels of entire ecosystems could be affected, harming seagrass beds and mangrove ecosystems. Previous research by the same scientists found that fish pee is a sort of fertilizer for coral, giving it the perfect levels of nitrogen and phosphorus.