海涂

tidal marsh / shoal / shallows

surname Hai

ocean / sea / CL:個|个[ge4],片[pian4] / great number of people or things / (dialect) numerous

to apply (paint etc) / to smear / to daub / to blot out / to scribble / to scrawl / (literary) mud / street

surname Tu

variant of 途[tu2]