1. Larger Sharks: Larger shark species, such as the great white shark (Carcharodon carcharias), are known to prey on salmon sharks, particularly the smaller and younger individuals.
2. Killer Whales (Orcas): Orcas (Orcinus orca) are apex predators and opportunistic hunters that include salmon sharks in their diet, especially in regions where their ranges overlap.
3. Marine Mammals: Some marine mammals, like seals and sea lions, have been documented killing and consuming salmon sharks. Sea lions (Otariidae) and fur seals (Arctocephalus spp.) are notable predators in some areas.
4. Human Fishing: Commercial and recreational fishing can have significant impacts on salmon shark populations. Targeted fishing, bycatch in other fisheries, and sport fishing all contribute to the removal of salmon sharks from their natural environments.
Although there are predators of salmon sharks, these sharks are still considered apex predators due to their position at the top of the food chain in many marine ecosystems.