Its cobalt blue back, silver belly, and sharply pointed dorsal fin make the Blue Marlin instantly recognizable. These giants can grow up to 14 feet in length and weigh nearly 2,000 pounds. In the Gulf of Mexico, some have been caught weighing over 1,000 pounds.

Blue Marlin are the largest of all marlin species in the Gulf. As apex predators, they feed on tuna, mackerel, squid, and smaller baitfish. They usually hunt near the surface, especially along warm tide lines and areas with floating Sargassum grass. However, they’ll dive deep when needed to chase squid and other prey.

These fish are carnivores and can live up to 27 years. Because of their size, value, and popularity, conservation is critical. Blue Marlin are regulated under international and local fishing laws. Most anglers practice catch and release, and many fish are tagged to support scientific research.

Still, some countries consider Blue Marlin a delicacy and serve it as sashimi. Due to its rarity and size, the Blue Marlin is one of the most expensive game fish in the Gulf—and among the top targets worldwide.

Anglers travel from around the world to chase these majestic giants. Whether you’re an experienced sport fisherman or a first-timer, encountering a Blue Marlin is a memory you’ll never forget.