Below you can find the Sharks lack an air bladder so most of them must do this constantly to keep from sinking Jeopardy Words Answer. The answer to Sharks lack an air bladder so most of them must do this constantly to keep from sinking has 4 letters. This clue belongs to the Sharks category and is part of Jeopardy Word Level 505. If you scroll near the bottom you will find other clues and answers part of level 505