It's Tokyo's premier beach -- a strip of wave-washed sand carefully constructed more than a decade ago in a multibillion yen project to give the sprawling capital an ultramodern waterfront.
But the city has a warning to visitors -- don't swim, don't even wade. And it might be best to cover your nose.
It turns out those waves are washing the beach with human waste, thanks to sewage plants upstream that spill their contents into Tokyo Bay whenever they are inundated by heavy rain.