Sailfish are two species of fish in the genus Istiophorus, living in warmer sections of all the oceans of the world. They are predominately blue to gray in color and have a characteristic erectile dorsal fin known as a sail, which often stretches the entire length of the back. Another notable characteristic is the elongated bill, resembling that of the swordfish and other marlins.

Their meat is fairly tough and not widely eaten, but they are prized as game fish. These powerful, streamlined beasts can grow to more than 10 feet (3 meters) and weigh up to 220 pounds (100 kilograms). When hooked, they will fight vigorously, leaping and diving repeatedly, and sometimes taking hours to land.

Sailfish are fairly abundant throughout their range, and their population is considered stable. They are under no special status or protections.