




Isistius brasiliensis
The Cookiecutter Shark is a small but fascinating fish known for its unique feeding behavior. It takes cookie-shaped bites out of larger animals like whales and dolphins!
Habitat: Deep Sea
The Cookiecutter Shark is a small, torpedo-shaped shark with a brown-grey body and a distinct dark band around its gills, resembling a collar. It has large green eyes and a glowing belly that helps it blend into its deep-sea environment.





Category
FishRarity
Common
Danger
1/5 · Very low
Snaps
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After biting on, this shark spins its body to perfectly carve out a circular piece of flesh.
Amazingly, it loses and regrows its entire set of lower teeth all at once!
It bites chunks out of large animals like whales, dolphins, and even submarines!
Its lower teeth are all joined at their base, creating a single, saw-like cutting blade.
Cookiecutter Shark has a glowing belly that helps it disappear in dim light, making it a tricky hunter from below.
Cookiecutter Shark can take perfect circular bites thanks to its razor-sharp, connected lower teeth and suction-cup lips.
Cookiecutter Shark travels thousands of meters up and down daily, following prey from deep ocean to shallower waters.
This tiny shark takes cookie-cutter bites out of much bigger ocean creatures!
Thunnus albacares
leaves distinctive circular bite marks on tuna.

Tursiops truncatus
often targeted for bites while swimming in the open ocean.
Kogia breviceps
inflicts circular wounds on this smaller deep-diving whale.
Megachasma pelagios
even other large sharks are not safe from its bites.
Camouflaged describes organisms that possess coloring or patterns that allow them to blend into their environment.
This trait describes organisms that manipulate external objects to achieve a specific goal.
An ambush predator hunts by patiently waiting and concealing itself, then launching a sudden attack when unsuspecting prey comes within range.
This trait signifies organisms belonging to a very old evolutionary group with ancestors dating back millions of years.
Deep sea habitats are characterized by extreme pressure, darkness, and cold temperatures, supporting unique life forms below the sunlit zone.
This trait identifies organisms whose diet consists entirely or primarily of animal tissue.
Aquatic habitats encompass environments where organisms live predominantly in water, including oceans, rivers, lakes, and wetlands.
Pertaining to organisms that emit light through bioluminescence or fluorescence.
Nocturnal animals are primarily active during the nighttime hours, typically resting or sleeping during the day.
Danger
1/5 · Very low
Cookiecutter Sharks live in the deep ocean and are not encountered by people. They pose no danger to humans.
42-56 cm
0.2-0.6 kg
20-30 years
This tiny shark takes cookie-cutter bites out of much bigger ocean creatures!
2 km/h
Deep Sea
Ambush
3700 m
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