Dichotomous Key

Sharks

Help save sharks!

Millions of sharks are killed every year because people don't understand them. They are seen as cold blooded killers. Learning how to identify different species is one step towards understanding them, and possibly saving them from extinction.
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Tiger Shark

The tiger shark is currently the most dangerous shark that we know of. With adrenaline levels higher than any other creature on the face of the earth. They are known for eating absolutely anything they find as well as their unpredictability.

Dichotomous Key

1a- If the organism has no growths on it's head, go to 4

1b- If the organism has 1 or more growths on it's head, go to 2


2a- If the organism has a T shaped head, go to 3

2b- If the organism does not have a T shaped head, it is Pristiophoros cirratus


3a- If the organism has a blue body, it is Sphyrna mokarran

3b- If the organism has a grey body, it is Sphyrna zygaena


4a- If the organism has large eyes, go to 5

4b- If the organism does not have large eyes, go to 7


5a- If the organism has color in it's eyes, it is Prionace glauca

5b- If the organism has pitch black eyes, go to 6


6a- If the organism has long fins, it is Isurus paucus

6b- If the organism has short fins, it is Isurus oxyrinchus


7a- If the organism has a pattern on it's body, go to 8

7b- If the organism does not have a pattern on it's body, go to 9


8a- If the organism has spots, its is Rhincodon typus

8b- If the organism has speckled stripes, it is Galeocerdo cuvier


9a- If the organism is brown and white, it is Negaprion brevirostris

9b- If the organism grey and white, it is Carcharodon carcharias