Globally, the coastal lagoons of Lagos (Nigeria), Sakumo (Ghana) and Bizerte (Tunisia) -- close to large urban centers and without waste and sewage treatment systems -- are among the most affected water ecosystems of this nature by microplastic pollution.
Corals have declined by 50% over the last 30 years, with losses of 70-90% expected by mid-century. This mass decline is largely attributed to human activity.
Concerns had been raised from residents in Muri regarding cages holding sea urchins locally known as “avake” (Tripneustes gratilla) in Muri lagoon.