What are the blue marlins predators?

* Sharks: Great white sharks, tiger sharks, bull sharks, and mako sharks are all known to prey on blue marlin.

* Killer whales: Killer whales are also known to prey on blue marlin.

* Other large fish: Swordfish, tuna, and wahoo are all large fish that are also known to prey on blue marlin.

* Humans: Humans are also a predator of blue marlin. Blue marlin are caught for food, sport, and their fins.