the adult swordfish has few predators. humans routinely eat them. killer whales sometimes take them for prey, but not too often. the only predator besides humans that poses a regular threat to swordfish is the short fin mako, the fastest shark. even for them the swordfish is a dangerous prey; there are many cases of dead or dying makos being found with broken off swords in their bodies
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Killer Whales and Sharks.