Sailfish and swordfish are two of the top dogs of the big-game fishing world. These are some of the fastest, biggest, and hardest-fighting saltwater species that can be caught with a rod and reel. And ...

Monica Cull is a Digital Editor/Writer for Discover Magazine who writes and edits articles focusing on animal sciences, ancient humans, national parks, and health trends. View Full Profile. While ...

Many of us are familiar with sailfish — relatives of marlin— only from seeing them on the walls of sport fishermen. But watching them underwater, whether in person or on video, shows how beautiful the ...