literally will die of starvation if they hippos die the rivers and lakes could die with them hippos chaum through huge amounts of grass every night and this grass contains a precious element called silica floating in the water during the day that digestion kicks in they then excrete vast quantities of dung into the water the silica in the hippo dung is absolutely vital for the health of africa's waterways a new study has found it helps curb algae blooms that killed marine life. so to have healthy waterways we need healthy hippos but hippos don't gotta much sympathy with the locals just last year several people have died from hippo attacks have been and many many cases of people killed by hippos and this means people don't like to tolerate people they were often killed it's been in the press in kenya quite a lot with in many many instances of local people calling the service to come and kill hippos because they feel like their lives are endangered. with that cattle and the hippos all competing for dwindling grasslands the biggest loser of this fight might be our environment. you're watchin