To zip through water, swordfish reduce drag
Newly found organ excretes oil that may increase swimming efficiency
![swordfish](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/07/070616_lh_swordfish-main_free.jpg?fit=860%2C460&ssl=1)
SEA SPEED Swordfish are one of the fastest fish in the ocean, thanks to their streamlined bodies — and possibly their slick skin.
Angel Fitor/Science Source