訓 うみ ・ 音 カイ
Sino-Vietnamese: hải
Water radical 氵 plus 毎 for sound: where every river flows in the end. Han Viet hai, as in hai ngoai 海外 (overseas).
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
夏は海で泳ぎます。 (なつはうみでおよぎます)
In summer I swim in the sea.