estuary and delta
Legendary longevity: over 100 years. Galapagos tortoises, Greenland sharks, ocean quahogs celebrate with family once every 4 years
Worker
Elders
Bro
birth time
Taxons
almost no rain in summer, more precipitation in winter
if born as {name}
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
age
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
Warm summer
The basics
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.
My weight?
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
Maturity
Melon
Potential Habitat
About health
marine coastal
lots of grass, few trees, rains are rare
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
Repro interval
results
summer warm and almost no rain
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
summer warm, winter not very cold
Gestation
islands and part of Australia, many unusual animals and plants
Sex
{name} birthday
Upcoming jubilees
Gremllins
mo
Nearctic realm
rains are very rare, almost a desert
No results found
North America and Greenland, from tundra to forests
all seas and oceans
Filters
On the map
Pleasant summer
Female ♀
Cold and almost dry
Upcoming birthdays
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)
terrestrial habitat, land surface outside water
Age (from birth to death)
sq mm
yr
comfortable summer, +20…+25 °C
Age (embryo)
Wanderers
How similar?
world of Australasia
Jubilee = every 10th birthday
dry, cold winter, lots of grass, few trees
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?
Very dry
Neither
Business sausages
Young offspring still dependent on parental care.
zones of mixing fresh and sea water — river deltas, estuaries
Lifespan average
What do they eat?
water is almost always cold, there may be ice in winter, not hot in summer
dry and cold almost all year round
Where do they live?
Marine world
forests on land — tropical, temperate, boreal
What do they look like?
Maturity
emergence (insects)
end of lifespan
River estuary into the sea
How do they live?
fertilization / egg laying
How do they behave?
birth / hatching
metamorphosis / end of larval stage
Temperate mixed forest
end of acceleration
Share
Duration
Find a pet...
Cold sea
saline marine habitat
This is me
Warm summer with almost no rain
Steppe
Gamers
where the river flows into the sea, slightly salty water, lots of fish and birds
Pets
How are they built?
marine
shallow near the shore, water rises and falls, crabs live here
Nearctic realm
Indomalayan realm
mm
Theoretical lifespan
ml
Stars
Link copied
coastal marine zone — shelf, neritic zone
My age?
wk
My size?
terrestrial
{name} jubilee
Asexual
swap
cm
Subpolar sea
Old-timers
Find an animal or breed...
Southeast Asia and islands, always hot and humid
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?
terrestrial forest
celebrated their {n} birthday
When you would have been born if you lived as {name}
Littoral Zone
Cold steppe
Daddies
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
the sea is covered with ice most of the year or has many ice floes, very cold in winter
Hermaphrodite ⚥
Where are they found?
all seas and oceans
North America and Greenland, from tundra to forests
from 0.8 to 1.2 kilograms, 0.6 – 1.2 meters
summer warm, many oaks, birches, maples
Length
kg
Summer almost without rain
Observations
◉{N} more on tap