Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Worker
Elders
Bro
always frost, even in summer it's cold
Very cold
birth time
Pelagic Ocean
Taxons
if born as {name}
very cold, short summer, lots of moss
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
cold, short summer, almost no trees
g
age
Polar tundra
t
When your next jubilee falls in {name} life years
Human
birth date
Close
was
days
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
Marine world
marine pelagic
marine epipelagic
The basics
How old you would be if you lived as {name}
crustaceans
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.
My weight?
marine mesopelagic
small planktonic crustaceans — copepods, krill
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
Maturity
after transformation until death
Potential Habitat
About health
marine bathypelagic
milk
Always frosty
When your next birthday would fall if you lived as {name}
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
Sofa
Repro interval
results
Polar sea
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Gestation
Sex
{name} birthday
Upcoming jubilees
Gremllins
mo
No results found
all seas and oceans
very deep, dark and cold, strange fish live here
polar
Filters
On the map
Female ♀
the coldest and iciest edge, almost always snow and ice
Upcoming birthdays
150 to 300 kilograms, 1.6 – 4 meters
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.
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
Height
birth year
Age (juvenile)
Age (from birth to death)
sq mm
yr
Age (embryo)
Wanderers
sea covered with ice or ice floes most of the year, very cold in winter
How similar?
far from shore, deep water, large whales and sharks live here
Subpolar Sea
Jubilee = every 10th birthday
Male ♂
until the celebration
baby / chick
Tundra
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?
Neither
Business sausages
the twilight zone of the sea, 200–1000 meters depth
Young offspring still dependent on parental care.
world of Antarctica
Lifespan average
What do they eat?
Where do they live?
Marine world
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
end of acceleration
the upper illuminated layer of the sea, 0–200 meters
Share
Find a pet...
very cold, lots of snow and ice
always cold, even in summer it's frosty
saline marine habitat
This is me
Gamers
world of Antarctica
Pets
How are they built?
marine
mm
Theoretical lifespan
ml
Stars
Link copied
the coldest and iciest edge, almost always snow and ice
My age?
wk
My size?
sea almost always under thick ice, very cold
sea almost always covered with thick ice, very cold all year round
{name} jubilee
Asexual
swap
cm
Old-timers
Find an animal or breed...
turns
Rabbits, falcons, red-eared turtles hang out for 6-9 years and party on their birthday four times a year
Rascals
Where do they take shelter?
celebrated their {n} birthday
drink mother's milk in childhood
Abyssal Ocean
When you would have been born if you lived as {name}
Litter size
Daddies
the dark depths of the sea, below 1000 meters
Lifespan maximum
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
Polar Sea
Hermaphrodite ⚥
pelagic zone — open water far from shore and seabed
Where are they found?
all seas and oceans
kg
Always very cold
Observations
◉{N} more on tap