Below you can find the Beavers have 6 of these on their heads (in 2 sets of 3); 1 is transparent & helps in swimming underwater Jeopardy Words Answer. The answer to Beavers have 6 of these on their heads (in 2 sets of 3); 1 is transparent & helps in swimming underwater has 7 letters. This clue belongs to the Busy as a beaver category and is part of Jeopardy Word Level 930. If you scroll near the bottom you will find other clues and answers part of level 930