 The native Hawaiian people of the area were called Ke <unk> o <unk> . They used the island to cultivate watermelon and to harvest pili grass for the construction of thatched roofs . According to Hawaiian legend , the goddess <unk> killed a girl on the island ; remorseful , she then proclaimed a law forbidding further killing . <unk> @-@ <unk> 's brother <unk> ( sometimes referred to by historians as her son , Ku @-@ <unk> ) was said to live in an underwater cavern off Ford Island with <unk> , a giant water lizard which supplied food to the people of <unk> Beach . 
