The crow shark is a small deep-sea shark up to 50 centimeters long. It has special light-emitting organs on its belly that help it hide in the ocean darkness.
The crow shark differs from other sharks with its smooth skin and light-emitting organs on its belly. It is important for deep-sea nature because it regulates the population of small animals and serves as food for large fish.
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
Photophores color
Offspring
Worker
Elders
Bro
birth time
Pelagic Ocean
ambush
Conceals itself to ambush or approach prey undetected.
Taxons
carnivore
if born as {name}
pursuit
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
bioluminescence
Actively chases and captures mobile prey in open space.
g
age
t
When your next jubilee falls in {name} life years
Predator remains still and concealed before launching a sudden attack.
Human
birth date
Palearctic realm
swimming
no permanent shelter
Close
water column
was
days
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
Marine world
marine pelagic
The basics
continental slope
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
adult
Maturity
fish of small size
primary food sources
crabs
Coconut
live marine and freshwater shrimps
Potential Habitat
About health
When your next birthday would fall if you lived as {name}
d
Claspers size
In husbandry
Feeds while suspended in open water between surface and bottom.
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.
Repro interval
results
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Body size
aquatic
Colors
vision
Sex
{name} birthday
Upcoming jubilees
Gremllins
mo
No results found
all seas and oceans
Trophic type
Filters
small fish
On the map
lunge
all life stages
Female ♀
Body color
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
birth year
Maturity
Age (from birth to death)
sq mm
yr
most of Europe and Asia, various forests, steppes and tundra
Wanderers
How similar?
far from shore, deep water, large whales and sharks live here
Jubilee = every 10th birthday
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?
Neither
Earliest developmental stage inside an egg or womb.
Business sausages
Young offspring still dependent on parental care.
squids
Lifespan average
What do they eat?
water is almost always cold, there may be ice in winter, not hot in summer
Where do they live?
Rapidly swallows prey or food items whole without chewing.
Marine world
bioluminescence
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
Share
Duration
Find a pet...
Mature, fully developed individual capable of reproduction.
Cold sea
gulping
saline marine habitat
This is me
Actively hunting and capturing live prey.
from 0.5 to 0.8 kilograms, 0.5 – 1 meter
Gamers
Teeth count
Pets
How are they built?
marine
Indomalayan realm
mm
Theoretical lifespan
ml
Stars
Link copied
My age?
wk
My size?
whole swallow
{name} jubilee
Photophores count
Asexual
Dorsal spines count
swap
cm
Old-timers
Find an animal or breed...
Southeast Asia and islands, always hot and humid
active predation
camouflage
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
When you would have been born if you lived as {name}
live squids
Litter size
live crabs, shrimps, lobsters
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
Hermaphrodite ⚥
pelagic zone — open water far from shore and seabed
shrimp
Where are they found?
all seas and oceans
Primarily detects and locates food using eyesight.
Species lacks any fixed or lasting shelter structure.
embryo
Length
kg
Rapid forward strike to seize prey.
Observations
◉{N} more on tap