Spear fishing gun

Spear fishing gun, a tool used in underwater hunting, combines precision and power for fish capture.

About this subject

The spear fishing gun, also known as a speargun or underwater harpoon gun, is an essential tool for the practice of underwater hunting. It operates by releasing a steel or fiber shaft with a barbed tip, propelled by rubber bands (bands) or compressed air. Modern models use materials like anodized aluminum and carbon fiber to resist saltwater corrosion, with lengths ranging from 50 cm to 1.5 m, depending on the target species and water visibility.

The history of the spear fishing gun dates back to the 1930s when Italian Luigi Ferraro developed the first prototypes using springs. In the 1950s, natural rubber bands were replaced by synthetic rubbers, increasing power and durability. Countries like Brazil, Australia, and the United States have strong underwater fishing traditions, particularly along the Brazilian coast where fishing for snook and kingfish is common. The technique requires breath-hold training and knowledge of fish behavior.

Safety is a critical aspect of using a speargun. Accidents can occur if the trigger is inadvertently fired out of water or if the barbed tip strikes another diver. Therefore, modern equipment includes safety locks and quick-loading systems. Regulations vary; in Brazil, underwater fishing is only allowed with an environmental license, and the use of electric or explosive harpoons is prohibited.

Trivia: the world record for underwater fishing with a speargun is a 536 kg swordfish caught in New Zealand in 2014. The practice is also used in scientific research to collect specimens, when authorized by competent authorities.

Frequently Asked Questions

What is the difference between a band-powered and a pneumatic speargun?

A band-powered speargun uses tensioned rubber bands to propel the shaft, being quieter and easier to maintain. A pneumatic speargun uses a compressed air cylinder, offering more power and range but requiring more careful maintenance.

Is a license required to use a spear fishing gun in Brazil?

Yes. Amateur underwater fishing requires registration with Ibama and a sport fishing license. Using a speargun without a license is illegal and subject to fines.

How do I choose the ideal speargun length?

Length depends on water visibility and target fish. In clear water and for large fish, a 90 cm to 1.2 m speargun is recommended. In murky water, shorter models (50-70 cm) are easier to maneuver.