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 the black tailed shark, it is a large shark belonging to the true shark family and the true shark genus. Large in size, typically ranging from 2.5 to 3.5 meters in length, with the largest individual exceeding 4 meters. Their bodies are spindle shaped, their heads are flat, their eyes are large and round, and they have prominent black eye circles, which is the origin of their names. The back is dark gray or black, the abdomen is white, and the tail is particularly long, which is one of its prominent features. Mainly living in tropical and subtropical waters, especially near coral reefs, it is a nocturnal predator that feeds on fish, crustaceans, and other marine organisms. It is ovoviviparous, which means that young sharks hatch in their mother's body and can live independently after birth.

It is a large predatory fish that lives in the ocean. Known for its massive size, powerful strength, and sharp teeth, it is one of the top predators in the marine food chain. Usually, the body length is between 4 and 6 meters, and the weight can reach 2.5 tons. Having streamlined bodies and powerful tail fins, they are able to swim quickly underwater at extremely high speeds. Both vision and smell are very sensitive, able to detect prey in the distance. Mainly feeds on seals, fish, and other marine mammals. Although great white sharks sometimes attack humans, this situation is relatively rare and they usually do not actively attack humans. It is a protected species.

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.

It is a large river sea migratory fish that can weigh up to 300 kilograms, age up to 60 years old, and typically measure between 4.3 and 5.3 meters in length. The kiss is long and wide, accounting for about 8% of its total length. The body is covered with 5 rows of bone plates, and the back color ranges from black to brownish gray, while the abdomen is white to gray. Young sturgeons usually inhabit freshwater bodies and gradually migrate towards the ocean as they grow. Food includes aquatic animals and plants, while adult sturgeons are omnivorous and feed on benthic organisms and small fish. The spawning behavior of Atlantic sturgeons is mainly influenced by water temperature, and they choose to lay eggs in flowing water bodies with hard objects such as rocks and pebbles.

It is a large marine fish that lives in tropical and subtropical waters, known for its astonishing speed and jumping ability. Having slender bodies and pointed snouts, they are able to quickly navigate through water like arrows. Their bodies are usually dark blue or black with white spots on top, which helps them camouflage in the ocean. It is a top predator that mainly feeds on small fish and squid. When hunting, they will use high-speed sprinting to capture prey, and sometimes even jump out of the water to hit the target with astonishing strength and speed. This hunting method demonstrates the physiological adaptability of swordfish.