Completed
California Sea Lion
Zalophus californianus
Silhouette: Margot Michaud · PhyloPic
- KingdomAnimalia (Animals)
- PhylumChordata (Chordates)
- ClassMammalia (Mammals)
- OrderCarnivora (Carnivorans)
- FamilyOtariidae (Eared Seals)
- GenusZalophus (California, Galápagos, and Japanese Sea Lions)
- SpeciesZalophus californianus (California Sea Lion)
In 3 days ~10% in a week ~30%
25 Verified sightings at Portland
927 In all 8 parks From 2019 to 2026
March Best month
☀️ Diurnal When it's spotted
About the California Sea Lion
The California sea lion (Zalophus californianus) is a coastal eared seal native to western North America. It is one of six species of sea lions. Its natural habitat ranges from southeast Alaska to central Mexico, including the Gulf of California. California sea lions are sexually dimorphic; males are larger than females, and have a thicker neck, and a protruding sagittal crest. They mainly haul out on sandy or rocky beaches, but they also frequent manmade environments such as marinas and wharves. California sea lions feed on a number of species of fish and squid, and are preyed on by orcas and great white sharks.
California sea lions have a polygynous breeding pattern. From May to August, males establish territories and try to attract females with which to mate. Females are free to move in between territories, and are not coerced by males. Mothers nurse their pups in between foraging trips. California sea lions communicate with numerous vocalizations, notably with barks and mother-pup contact calls. Outside their breeding season, California sea lions spend much of their time at sea, but they come to shore to molt.
California sea lions are particularly intelligent, can be trained to perform various tasks and display limited fear of humans if accustomed to them. Because of this, California sea lions are a popular choice for public display in zoos, circuses and oceanariums, and are trained by the United States Navy for certain military operations. The International Union for Conservation of Nature (IUCN) lists the species as Least Concern due to its abundance. To protect fish, the US states of Oregon and Washington engage in annual kill quotas of California sea lions. Wikipedia →
Sounds
Recording0:13
Canada · 2023
© John D Reynolds · iNaturalist · CC BY-NC 4.0
Recording0:15
United States · 2024
© jdiversitybrown · iNaturalist · CC BY-NC 4.0
Recording0:11
Canada · 2025
© Andrew Jacobs · iNaturalist · CC BY-NC 4.0
Recent sightings of California Sea Lion in Portland
LIVEiNaturalistGlobal Distribution
Parks Where Found
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Channel Islands National Park | 🇺🇸 United States | |
| 2 | Cabo Pulmo National Park | 🇲🇽 Mexico | |
| 3 | Redwood National Park | 🇺🇸 United States | |
| 4 | Bahía de Loreto National Park | 🇲🇽 Mexico | |
| 5 | El Vizcaíno Biosphere Reserve | 🇲🇽 Mexico | |
| 6 | Pacific Rim National Park Reserve | 🇨🇦 Canada | |
| 7 | Great Bear Rainforest | 🇨🇦 Canada | |
| 8 | Olympic National Park | 🇺🇸 United States |
Cities Where Found
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Diego | 🇺🇸 United States | |
| 2 | San Francisco | 🇺🇸 United States | |
| 3 | Sacramento | 🇺🇸 United States | |
| 4 | Seattle | 🇺🇸 United States | |
| 5 | Los Angeles | 🇺🇸 United States | |
| 6 | Vancouver | 🇨🇦 Canada | |
| 7 | Portland | 🇺🇸 United States |
Zoos & Centres Where Found
Closest Relatives at Portland
Before you go
What are the chances of seeing a California Sea Lion in Portland?
Rare
Under 5% of wildlife watchers report a California Sea Lion sighting in Portland on a given day, based on 25 verified sightings from GBIF citizen-science data. It is the 20th most-seen of the 27 mammals we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
When is the best time to see a California Sea Lion in Portland?
March and April
In those months about 10% of wildlife watchers report a California Sea Lion in Portland on a given day, against under 5% in May to February, the lowest months.
What time of day is best to see a California Sea Lion?
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most California Sea Lion sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Is Portland the best place to see a California Sea Lion?
7th of 7
Of the 7 cities where we can rate California Sea Lion sightings, Portland ranks 7th at under 5%. The best odds are in San Diego (United States, about 40%), San Francisco (United States, about 20%) and Sacramento (United States, about 20%).
Where does the California Sea Lion sighting chance come from?
GBIF citizen-science records
It is estimated from how often the California Sea Lion is recorded against all the mammals logged in Portland (25 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
