Meet Chonkers, the 2,000-Pound Steller Sea Lion Who’s Become San Francisco’s Unbothered King
There’s a new heavyweight ruling Pier 39 — and tourists can’t stop filming him.
Chonkers, a roughly 2,000-pound Steller sea lion, has muscled his way onto San Francisco’s most famous floating docks and turned the place into his personal stage. He’s about three times the size of the California sea lions that typically lounge there, and the internet is fully obsessed.
The Wall Street Journal reported he was first spotted at Pier 39 in March. Reddit users started posting clips of him almost immediately, showing Chonkers planted at the front of a wooden platform while the smaller sea lions kept a respectful distance.
Why He Came to Pier 39 — and Why He Won’t Stay
Don’t get attached. Chonkers isn’t moving in.
Pier 39 harbormaster Sheila Chandor told WSJ: “We’re a pit stop, that’s how we saw ourselves.” She added, “We didn’t build those floats for 2,000-pound animals.”
So why is he here? Laura Gill, public programs manager with the Marine Mammal Center, thinks the answer is exactly what you’d guess.
“There’s just a lot of food right now,” Gill said.
That tracks. Steller sea lions are active predators that hunt more than 100 species of fish — including Atka mackerel, pollock, salmon and cod — plus cephalopods like squid and octopus. They typically feed at night, and what they eat shifts with location and season based on what’s available. They need consistent, abundant food to survive, grow and reproduce across every life stage.
Steller vs. California Sea Lions: It’s Not Even Close
Here’s the inside-baseball part for anyone wondering why Chonkers looks so wildly out of scale next to the regulars.
Steller sea lions are significantly larger than California sea lions. The difference is most pronounced in adult males, with Steller males often tipping the scales at more than double the weight of their California counterparts.
They also have a more imposing look. With thicker necks and heavier, more robust bodies, Steller sea lions appear much more powerful — almost bear-like — compared to the slimmer, more streamlined California sea lion. Adult males can stretch up to 11 feet long and weigh up to 2,500 pounds, according to NOAA Fisheries.
A Surprisingly Impressive Resume
Beyond the size, Stellers are serious athletes. They forage both near the coast and far offshore, in bottom-feeding (benthic) and open-water (pelagic) environments, and individuals often develop different feeding strategies. Outside of breeding season, some adult females travel far past the continental shelf hunting food while others stay close to land.
Their diving ability improves with age, and recorded dives have hit roughly 1,400 feet. Males, in particular, can migrate long distances over a season.
On land, they’re intensely social — gathering in tightly packed groups to rest, shed fur, mate, give birth and care for pups. At sea, they cruise alone, in small groups, or in larger clusters called rafts near prey-rich waters. Sometimes they lift their flippers out of the water to regulate body temperature, since flippers lose heat fast and can also soak up warmth from the air.
For now, Chonkers is doing what Stellers do best: eating well, drawing a crowd and looking unbothered while doing it.
This article was created by content specialists using various tools, including AI.
