Elephant seals live in two distinct populations on opposite ends of the world. Northern elephant seals inhabit the Pacific Ocean from Baja California to the Gulf of Alaska, while southern elephant seals concentrate around subantarctic islands in the Southern Ocean, with the largest colony on South Georgia island. Together, the two species number close to one million animals spread across vastly different ocean environments.
Northern Elephant Seals: The Pacific Coast
Northern elephant seals range along the eastern Pacific, breeding on beaches from central Baja California up through the California coast. Their most well-known colonies sit on the Channel Islands, at Año Nuevo State Park near Santa Cruz, and along the San Simeon coastline at Piedras Blancas. These are the sites where thousands of seals haul out on wide, sandy beaches to give birth, mate, and molt each year.
Once they leave shore, males and females split in different directions. Males travel north toward the Aleutian Islands and the Gulf of Alaska, covering 6,000 to 7,000 miles one way between their feeding grounds and breeding beaches. Females head further west into the open Pacific. Over the course of a year, making two separate round trips between land and sea, females log over 11,000 miles while males cover around 13,000. In total, a single elephant seal can migrate 12,000 to 14,000 miles annually, making them one of the longest-distance travelers in the ocean.
The population of northern elephant seals has recovered to roughly 225,000 individuals after being hunted to near extinction in the late 1800s, when fewer than 100 animals survived. That bottleneck means every northern elephant seal alive today descends from a tiny group, but the species has recolonized beaches up and down California and into Mexico with remarkable success.
Southern Elephant Seals: Subantarctic Islands
Southern elephant seals are the larger of the two species, and they breed in enormous, densely packed colonies on remote islands ringing Antarctica. The global population sits at roughly 749,000 individuals divided into four genetically distinct groups. By far the biggest is the South Georgia stock in the South Atlantic, which accounts for over half the world population. About 397,000 seals concentrate on South Georgia alone.
The other three stocks are the Kerguelen/Heard group in the southern Indian Ocean, the Macquarie group in the southern Pacific, and the Peninsula Valdés population on the Atlantic coast of Argentina. That Argentine colony is the only major breeding site on a continental mainland. Smaller or remnant populations turn up in unexpected places: Australia, South Africa, South America, and vagrant individuals have been spotted as far north as Mauritius and Oman.
Within the Southern Ocean, the South Shetland Islands near the Antarctic Peninsula host a smaller breeding population of around 14,000 animals. These islands provide one of the few Antarctic breeding areas and serve as an important reference point for tracking how the species responds to changing conditions in polar waters.
Where They Go at Sea
Elephant seals spend the majority of their lives in open water, and “where they’re found” is as much about depth as geography. Southern elephant seals dive to depths greater than 1,500 meters (nearly a mile down) and can stay submerged for up to 77 minutes. Most productive foraging happens between 200 and 550 meters, depending on the individual and the prey available at different depths.
Northern elephant seals seek out cold, nutrient-rich water as they travel. Sea surface temperatures along their routes drop from 11 to 13°C near California down to 3 to 9°C in northern feeding grounds. Males and females forage at different depths and temperatures: females typically feed deeper, at 388 to 622 meters in water around 4.2 to 5.2°C, while males forage shallower, at 179 to 439 meters in slightly warmer water of 5.3 to 6.0°C. This separation means males and females aren’t competing for the same food even when their ocean ranges overlap.
What They Need on Land
Elephant seals come ashore twice a year, once to breed and once to molt, and their beach requirements are specific. They favor wide, sandy beaches that offer protection from storm waves and high tides. Narrow beaches backed by cliffs are risky because large swells can sweep through with little buffer. Wider stretches of coastline give females and pups room to avoid the surf, which is especially critical during the breeding season when newborn pups can’t yet swim.
On the California coast, colonies have expanded to new beaches over the past few decades as the population has grown. Seals sometimes show up in places that put them in close contact with people, including popular public beaches in Point Reyes National Seashore and elsewhere along the coast.
Where to See Them in California
Two of the most accessible elephant seal viewing sites in the world are along the central California coast. At Piedras Blancas, about five miles north of San Simeon, a free boardwalk and observation platforms sit directly above seal-covered beaches. The site is open 365 days a year, with accessible walkways on both sides of the parking lot. You can watch seals year-round here, though the biggest crowds of both seals and visitors come during the winter breeding season.
Año Nuevo State Park, south of San Francisco, offers a more structured experience. During the breeding season from December 15 through March 31, you can only view seals on docent-guided walks. Pups are born between December and February, so this window captures the most dramatic activity: bulls fighting for dominance, mothers nursing, and newborns learning to navigate the colony. From April through August, the park switches to self-guided hiking with a visitor permit as seals return in waves to molt. Females and juveniles shed their skin from May through June, and the big adult males follow from July through August.
For southern elephant seals, viewing is far more difficult. South Georgia is reachable only by expedition cruise ships, typically departing from Ushuaia, Argentina, or the Falkland Islands. Peninsula Valdés in Argentina is the most accessible mainland colony, where guided visits bring you within viewing distance of breeding animals on Patagonian beaches.