Japan made kanji

鯏（あさり）鰯（いわし）笂（うつぼ）蛯（えび）硴（かき）鮖（かじか）鯑（かずのこ）叺（かます）鱚（きす）鯒（こち）鮴（ごり）鯱（しゃち）鱈（たら）鯲（どじょう）鯰（なまず）鰰（はたはた）鮑（あわび）
These kanji are all borne in Japan by our ancestors and called 国字、和字、倭字、皇朝造字.
You may guess the meaning by dissembling kanji such as;
鰯(sardine) = 魚(fish) + 弱(weak) 鯱(orca)　= 魚 + 虎(tiger) 鱈(cod) = 魚 + 雪(snow)
Japanese is partly Marine people(Austronesian).