海水养殖

aquaculture

surname Hai

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

seawater

surname Shui

water / river / liquid / beverage / additional charges or income / (of clothes) classifier for number of washes

to raise (animals) / to bring up (children) / to keep (pets) / to support / to give birth

to cultivate / cultivation / to further / to encourage

to grow / to reproduce