Below you can find the These respiratory organs of aquatic animals occur in oysters & some insect larvae as well as in fish Jeopardy Words Answer. The answer to These respiratory organs of aquatic animals occur in oysters & some insect larvae as well as in fish has 5 letters. This clue belongs to the Science category and is part of Jeopardy Word Level 1681. If you scroll near the bottom you will find other clues and answers part of level 1681