Looks like a potentially good diving spot.
Officail site..."Worlds Marble Competition". Jeff just beyond the minuscule wading area grows giant seaweed and is also home to "godzilla". :) Cheers.
The water looks surprisingly clear for being near a city of 20 million people. %-)
But, it has an austere beauty...
Dont forget to bring your crocs...
Not a bathing beach I see... ouch!