black people have lower bodyfat by and large, fat floats on water so black people sink to the bottom like ROCKS if they can't swim.
Out of curiosity anyone know what percentage of blacks in the USA actually know how to do anything but drowned when confronted with depths greater than chest level? I only have this for my sample size, and for the moment I am quite content to form my opinions based on it as nothing has ever come along disproving it but I'd hate to be closed minded.