Large Predators:
* Orcas (Killer Whales): Highly intelligent apex predators that feed on a wide range of marine mammals (seals, dolphins, whales), fish, and even sharks.
* Great White Sharks: Primarily feed on large marine mammals, including seals, sea lions, and whales.
* Blue Sharks: Opportunistic predators that consume a variety of fish, squid, and other sharks.
* Tuna: While some species are primarily secondary consumers, larger species like Bluefin Tuna can act as tertiary consumers, feeding on large fish like mackerel and other tuna.
Deep Sea Predators:
* Sperm Whales: Dive deep to hunt giant squid, which are primary consumers.
* Giant Squid: Although primarily secondary consumers, their size and predatory habits make them tertiary consumers in some cases.
* Deep-sea sharks: Several species of sharks live in the deep ocean and prey on fish, squid, and even other sharks, acting as tertiary consumers.
Other Examples:
* Sea Otters: While primarily consuming sea urchins and shellfish, they can also prey on small fish and crustaceans, acting as tertiary consumers at times.
* Dolphins: While primarily feeding on fish, some species of dolphins, like the common dolphin, may target squid and other cephalopods, which in turn feed on smaller prey.
Important Note: The trophic levels of some species can vary depending on their diet and location. For example, a tuna might act as a tertiary consumer in one area while acting as a secondary consumer in another.
This list is not exhaustive, and there are many other tertiary consumers in the Pacific Ocean, depending on the specific ecosystem and the time of year.