The common hammerhead shark is a large marine predator with a hammer-shaped head. It swims in warm and temperate seas and hunts fish and rays.
The common hammerhead shark is distinguished by a smooth front part of the head without a central notch. It is important for nature because it controls the population of fish and rays in the oceans.
Immature form that undergoes metamorphosis before adulthood.
Worker
birth time
Pelagic Ocean
bottom
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
t
When your next jubilee falls in {name} life years
Human
days
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
Cephalofoil size
South and Central America, hot and humid, huge forests
About health
marine coastal
Pectoral fins count
When your next birthday would fall if you lived as {name}
Sofa
Repro interval
results
Colors
Sex
Upcoming jubilees
Gremllins
mo
Uses jaws or beak to break hard-shelled or tough food items.
live fish
all seas and oceans
Trophic type
Cephalofoil color
Filters
Upcoming birthdays
Truly long lives: 40-100 years. Bowhead whales, albatrosses, giant tortoises recall their birthday at most once a year
Lifespan
Age (juvenile)
Age (from birth to death)
Foraging occurs on the floor of aquatic or terrestrial habitats.
Age (embryo)
most of Europe and Asia, various forests, steppes and tundra
Wanderers
far from shore, deep water, large whales and sharks live here
world of Australasia
Jubilee = every 10th birthday
Earliest developmental stage inside an egg or womb.
Business sausages
Lifespan average
Regeneration
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
the upper illuminated layer of the sea, 0–200 meters
Share
Find a pet...
Mature, fully developed individual capable of reproduction.
water is cool or warm, cold in winter, comfortable to swim in summer
marine
Actively hunting and capturing live prey.
where the river flows into the sea, slightly salty water, lots of fish and birds
Pets
{name} jubilee
cm
Old-timers
Find an animal or breed...
turns
Rascals
Dorsal fin count
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
Actively searching habitats to locate food items.
Where are they found?
all seas and oceans
Species lacks any fixed or lasting shelter structure.
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
Taxons
carnivore
if born as {name}
age
water is almost always warm, even in winter you can swim, very hot in summer
birth date
Palearctic realm
swimming
no permanent shelter
Cephalofoil count
Close
water column
was
Career from 7 to 15 months. Dwarf hamsters, voles, field crickets celebrate their birthday twice a month
Marine world
marine epipelagic
The basics
Neotropical realm
My weight?
octopuses
Non-stop carnival: they only live a few days. Mayflies, rotifers, midges celebrate their birthday more than twice a day
primary food sources
teeth
Temperate sea
Potential Habitat
d
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.
Mass
Mosquitoes, fruit flies, small crustaceans hustle for up to 7 months and throw a birthday party every week
Gestation
islands and part of Australia, many unusual animals and plants
aquatic
Warm sea
{name} birthday
No results found
Yolk sac size
On the map
lunge
all life stages
Female ♀
Body color
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.
birth year
Maturity
sq mm
yr
How similar?
Feeding occurs within an oceanic or saltwater environment.
Male ♂
until the celebration
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
from birth to adulthood
squids
What do they eat?
Where do they live?
Immature individual that has not yet reached reproductive maturity.
Marine world
from birth to death
early young
Hard dental structures used to bite, tear, or scrape food.
River estuary into the sea
Duration
saline marine habitat
This is me
Gamers
crushing
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
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?
celebrated their {n} birthday
When you would have been born if you lived as {name}
live squids
Littoral Zone
Daddies
Lifespan maximum
foraging
whole life
Hermaphrodite ⚥
embryo
Length
kg
Rapid forward strike to seize prey.
Observations
◉{N} more on tap