Steller sea lion, or northern sea lion, is a large marine mammal from the family of eared seals. Males are much larger than females and have a thick mane on the neck.
Steller sea lion differs from other sea lions by the very large size of males and a thick mane. It is important for nature as the main predator of northern seas, helping to maintain fish stocks balance.
homogamy, reproduction always with fertilization, no alternation of generations
Whiskers count
Worker
birth time
Pelagic Ocean
breeding
Dogs, dolphins, lynx hang out for 9-25 years and party on their birthday three times a year
m
Map
will celebrate their {n} birthday
g
summer mild, +15…+20 °C
t
When your next jubilee falls in {name} life years
Human
days
Warm summer
live octopuses, squids
How old you would be if you lived as {name}
Theoretical maximum lifespan estimated from the Dynamic Energy Budget (DEB) mathematical model. This value reflects a biological potential derived from metabolic parameters, not from direct observation — real recorded lifespans are often significantly shorter.
adult
Maturity
cephalopods
Mane size
About health
marine coastal
milk
When your next birthday would fall if you lived as {name}
Piano
Repro interval
results
summer warm and almost no rain
summer warm, winter not very cold
Colors
Cool summer
Sex
Upcoming jubilees
Gremllins
mo
Teeth color
live fish
all seas and oceans
Trophic type
Filters
Palearctic realm
Upcoming birthdays
Winter with snow
eggs, roe or offspring develop in a nest built on the ground or close to it
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
Height
nest on the ground
rains almost always, very humid
young are born live on land, not hatched from eggs or roe
Age (juvenile)
Age (from birth to death)
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
far from shore, deep water, large whales and sharks live here
Jubilee = every 10th birthday
marine coastal demersal
Earliest developmental stage inside an egg or womb.
marine coastal benthic
Business sausages
Lifespan average
water is almost always cold, there may be ice in winter, not hot in summer
nest located directly on the ground surface on land, only the mother provides parental care for the offspring
in a terrestrial nest
Body temp
young after fast growth
Whiskers size
Juvenile stage following larval metamorphosis but not yet adult.
live birth
live octopuses
What do they look like?
Maturity
emergence (insects)
end of lifespan
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
metamorphosis / end of larval stage
fish
end of acceleration
benthic biotope of coastal marine waters
Share
Find a pet...
Mature, fully developed individual capable of reproduction.
300 to 350 kilograms, 1.8 – 2.5 meters
Cold sea
water is cool or warm, cold in winter, comfortable to swim in summer
Actively hunting and capturing live prey.
where the river flows into the sea, slightly salty water, lots of fish and birds
Pets
Nearctic realm
Indomalayan realm
Lots of rain and cool summer
{name} jubilee
cm
Old-timers
Find an animal or breed...
Flippers count
turns
Rascals
drink mother's milk in childhood
Teeth size
Litter size
Map data sources: Ecosystem classification — IUCN Global Ecosystem Typology (Keith et al., 2022), indicative distribution maps Keith et al. (2020), https://doi.org/10.5281/zenodo.3546513; Large Marine Ecosystems — NOAA LME Program; Bathymetry — GEBCO Bathymetric Compilation Group (2026), GEBCO_2026 Grid, https://doi.org/10.5285/4f68d5c7-45eb-f999-e063-7086abc036fa; Climate data — Generated using Copernicus Climate Change Service information; Species occurrence data — GBIF.org, Derived dataset "all animals", https://zveriki.com/dataset/dataset.tsv; Terrestrial ecoregions — RESOLVE Ecoregions 2017 (Dinerstein et al., 2017), CC BY 4.0
How to care for them?
Living from 25 to 40 years. Orangutans, bald eagles, African elephants celebrate their birthday twice a year
°C
Not specified
Fur temp
hunting in water
Where are they found?
all seas and oceans
Species lacks any fixed or lasting shelter structure.
Whiskers color
Summer almost without rain
lots of rain, cool summer, snow in winter
Locomotion through water employed while searching for or capturing prey.
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Offspring
Elders
Bro
normal sexual
Taxons
carnivore
almost no rain in summer, more precipitation in winter
if born as {name}
age
birth date
swimming
no permanent shelter
Palearctic realm
rest
Fur color
Close
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
Marine world
The basics
My weight?
demersal biotope of coastal marine waters
octopuses
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
primary food sources
Temperate sea
after transformation until death
Potential Habitat
d
In husbandry
On the go from 1.3 to 3.5 years. Forest mice, anoles, rainbow fish party on their birthday once a month
Feeding occurs in water bodies such as rivers, lakes, or oceans.
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Gestation
aquatic
land
{name} birthday
Nearctic realm
No results found
North America and Greenland, from tundra to forests
On the map
Pleasant summer
all life stages
Female ♀
Body color
nest located directly on the ground surface on land
Map data sources: Ecosystem classification — IUCN Global Ecosystem Typology (Keith et al., 2022), indicative distribution maps Keith et al. (2020), https://doi.org/10.5281/zenodo.3546513; Large Marine Ecosystems — NOAA LME Program; Bathymetry — GEBCO Bathymetric Compilation Group (2026), GEBCO_2026 Grid, https://doi.org/10.5285/4f68d5c7-45eb-f999-e063-7086abc036fa; Climate data — Generated using Copernicus Climate Change Service information; Species occurrence data — GBIF.org, Derived dataset "all animals", https://zveriki.com/dataset/dataset.tsv; Terrestrial ecoregions — RESOLVE Ecoregions 2017 (Dinerstein et al., 2017), CC BY 4.0
Potential habitat modelled from GBIF occurrence data. Map © Zveriki.com, licensed under CC BY 4.0.
birth year
Shelter used specifically for reproduction or nesting.
Maturity
sq mm
yr
comfortable summer, +20…+25 °C
How similar?
squids
Male ♂
until the celebration
baby / chick
age as {name}
How do they breed?
On the go from 3.5 to 6 years. Hedgehogs, crows, lizards treat themselves to birthday snacks 6 times a year
What if eaten?
octopuses
Neither
Young offspring still dependent on parental care.
squids
caring mother
What do they eat?
Where do they live?
Marine world
much snow in winter, cold
Flippers color
River estuary into the sea
Duration
fish
saline marine habitat
Flippers size
This is me
Warm summer with almost no rain
Mane color
most of Europe and Asia, various forests, steppes and tundra
Always very wet
Gamers
molting
Teeth count
How are they built?
marine
shallow near the shore, water rises and falls, crabs live here
mm
Theoretical lifespan
ml
Stars
Link copied
coastal marine zone — shelf, neritic zone
My age?
wk
My size?
Asexual
swap
Southeast Asia and islands, always hot and humid
active predation
Rabbits, falcons, red-eared turtles hang out for 6-9 years and party on their birthday four times a year
Where do they take shelter?
Warm summer and lots of rain
inhabit and develop on land, outside water bodies
celebrated their {n} birthday
When you would have been born if you lived as {name}
live squids
Littoral Zone
Daddies
Lifespan maximum
body
Hermaphrodite ⚥
North America and Greenland, from tundra to forests
embryo
Length
kg
lots of rain, warm and pleasant summer
Observations
◉{N} more on tap