California Sea Lion Trivia Questions

They belong to the Otariidae family (eared seals), distinct from true seals (Phocidae), with visible ear flaps and rotating hind flippers.

Males are much larger, reaching up to 850 pounds, while females max out around 220 pounds—a classic example of sexual dimorphism.

While typical dives last 3-5 minutes, they can hold their breath for 15-20 minutes when resting or hunting deep prey.

Their vibrissae are highly sensitive to hydrodynamic trails, helping them locate prey even in murky or dark water.

They get most of their water from prey and metabolize fats, but they cannot thrive on freshwater alone and need saltwater environments.

Males develop a prominent sagittal crest on the crown of their skull, which becomes more pronounced with age and dominance.

They do not migrate long distances; most populations are resident along the Pacific coast, with some seasonal movement for breeding or food.

In the wild, they sometimes use rocks as anvils to smash open hard-shelled prey, a rare tool-use behavior among marine mammals.