Swordfishes, also known as broadbills in some countries, are large migratory fish that often migrate to feed and reproduce. Since swordfishes are migratory fish, they often inhabit numerous places and are found across the world, specifically in tropical to temperate-mild oceans and sometimes in cold waters of the Atlantic, Indian, and Pacific Oceans.

Did you know migratory fish travel as the seasons change? For example, swordfishes along with sea turtles and orcas will move to cooler waters in the summer, and to warmer waters in the winter.

Description of the Swordfish

These creatures have very hydrodynamic body shapes. According to Merriam-Webster, hydrodynamic means, “a branch of physics that deals with the motion of fluids and the forces acting on solid bodies immersed in fluids and motion relative to them.” Swordfishes have an arrow-like body that allows them to cut through the water in order to swim long and fast distances. They are usually around 10 ft. long and have a sharp end which many call a sword or bill. This sword is pointed, flattened, and can grow to be as 2 ft. long. Furthermore, their dorsal fin is tall and narrow, and slightly curved backward. This allows them to make 360 degree turns when facing predators. Swordfishes are known to be speedy, powerful predators and are highly prized in numerous fishing communities due to them being difficult to catch. Swordfish are part of their own taxonomic family and are closely related to other billfish such as marlin or sailfish.


Although swordfishes are known for their incredible speed reaching an estimate of 60-80 mph, it is confirmed that sailfish and marlin are faster. Looking online and at some scientific literature, such as www.bbc.com you will learn that swordfishes can reach speeds at about 60mph (97km/h). While sailfish can swim even faster at around 68mph (110km/h). Other large marine predatory fish, such as tuna and marlin, reach similar extraordinary speeds.











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