It is a large fish that lives in the ocean and is known for its fast swimming and jumping abilities. Usually has a slender body and a sharp beak, with body colors ranging from deep blue to silver gray, sometimes with stripes or spots. It is a predator that feeds on small fish, squid, and other marine organisms. Distributed in tropical and subtropical waters around the world, especially in the Atlantic, Indian, and Pacific oceans. It is loved by fishing enthusiasts for its excellent athletic ability and spectacular jumping, and is also an important component of marine ecology. Due to overfishing, some species of marlin are facing survival threats and require protection and proper management.

Also known as marlin, it is a large marine fish that lives in tropical and subtropical waters. Known for its fast swimming and jumping abilities, it is often loved by fishing enthusiasts and marine life enthusiasts. The body is slender, usually silver blue with dark blue horizontal stripes. This type of fish can have a very large body size, with some species even growing up to several meters long and weighing hundreds of kilograms. Not only is it an important member of the marine ecosystem, but it is also a food source for many marine predators. Mainly feeding on small fish and crustaceans, sometimes also preying on other marine organisms.

Marlin fish is a common name for large marine fish in the family Serranidae of the order Perciformes. The maxilla of this fish family protrudes forward like a spear head, its side beak is blunt and round, its body is covered with small angular scales, and its skin is thick as leather. Widely distributed in the upper waters within 200 meters in tropical and subtropical regions. This fish is native to tropical and temperate waters of the Atlantic, Pacific, and Indian Oceans, and is the most well-known among all fish species. The fish mentioned in Hemingway's "The Old Man and the Sea" is also the largest fish caught by the San Diego Old Man, and is referred to as the marlin in the novel.

The formal name is "Blue Spearfish", which is a large marine swordfish with a spear shaped mouth. It is a species of tropical and subtropical oceanic upper water bodies, fierce in nature, agile in swimming, and carnivorous. Marlins prefer places with higher surface temperatures, feed on mackerel and tuna, and also dive deep to eat squid. They are famous for their ability to lift huge striking objects that they hook onto, and this rare ocean monster is the holy grail for sports loving fishermen. People consider their meat as a delicacy, especially in Japan where it is often used as a raw material for sashimi.