Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammal
- Order
- Carnivora
- Family
- Otariidae
- Genus
- Eumetopias
Habitat
Steller sea lions inhabit coastal waters and rocky shorelines of the North Pacific, from the Kuril Islands and Alaska down to California. They prefer areas with abundant fish stocks, often hauling out on isolated islands, rocky beaches, and man-made structures like buoys. Their range includes both cold, subarctic waters and milder temperate zones.
Diet
Steller sea lions primarily eat fish such as salmon, herring, and pollock, along with squid and occasionally octopuses. They are opportunistic hunters, diving to depths of up to 1,000 feet to catch prey, and often feed in groups during dawn and dusk. Their feeding behavior includes cooperative hunting strategies to herd fish.
Behavior
Steller sea lions are highly social, forming large rookeries on land where they haul out to rest and breed. Males are territorial and aggressively defend harems during the breeding season, while females form bonds with their pups. They are diurnal, spending much of their time in water foraging and on land basking, and are known for their loud roaring vocalizations to communicate.
Conservation Status
The IUCN status of Steller sea lions is Near Threatened, with population trends showing recovery in some eastern regions but declines in the western Aleutians due to threats like commercial fishing bycatch and habitat disturbance. Major threats include entanglement in fishing gear and competition for prey with fisheries.