Our oceans are home to amazing creatures, that often put on quite a show. Life in the ocean can be competitive so the animals that live there have evolved to be tough and aggressive. As evolutionary battles take shape, so too does the race to become the biggest, fastest or strongest takes place. One frontrunner in this battle to become the fastest predator is the swordfish, and it is able to outswim the vast majority of other marine life. Swordfish use their speed to hunt prey but also to avoid being prey themselves.
In addition to its impressive speed, the swordfish also has another weapon. The “sword” for which it is so well known is actually very effective at disabling its victim. One swipe of the mighty weapon into a school of fish can be enough to stun or kill its intended prey, making it easy for the swordfish to clean up afterward. The sword also helps protect the fish against other predators.
Being a popular target for sport fisherman, these magnificent creatures are a prize to catch and come with some incredible facts that many people would be surprised by.
Swordfish Fact #10: Swordfish Generate Their Own Heat
Fish are cold-blooded animals. This doesn’t mean that they are cruel and uncaring, rather it means that they are unable to generate their own heat as we do. Instead, they rely upon the environment around them to regulate their body temperature. This is why you often find that some species need to stick to specific areas where the water is the right temperature for them.
The swordfish, however, is a little different. Quite a rare feature in fish, they have an organ in their head that is able to generate heat for their eyes and brains. This helps to improve their vision, in turn helping them to find and catch their prey. With such specialised equipment giving them an advantage over others, it’s no wonder that they are such effective killers.