1. …how they sense things and their behavior
SHARKS!
…how they sense things and their behavior

2. MAN EATERS!!!!

3. BLOOD THIRSTY!!!

4. DOGS OF THE DEEP!!!!

7. FACTS: 1. Human blood does not appeal to sharks
2. Sharks attacks have not increased – only the amount of people swimming in the oceans

8. Six senses
Smell
Taste
Sound
Sight
“Feel/Touch”
Electro-reception

9. Electrosensory Pores

10. Detect temperature changes
Uses:
Prey detection
Detect temperature changes

11. Close range sensing
Filled with mucus!
Great Whites use this to attack

12. THE SHARK EYE
Stop looking at my eye!!!

13. Size varies with species

14. Less light = bigger eye Hornsharks: less than 1% of head
Thresher sharks:
Up to 20% of head
Less light = bigger eye

15. Size varies with species
Used primarily at distances of 10m or more

16. Size varies with species
Used primarily at distances of 10m or more
“Eye Shine” result of reflective plate in back of eye

17. Dark pigments can cover the plates acting like fish sunglasses!
…not all fish have reflective plates!
Dark pigments can cover the plates acting like fish sunglasses!

18. The Lateral Line System

19. Dogfish have over 6,000 nerve fibers in their lateral line!

20. Senses low frequency sounds
Similar to struggling fish

21. Olfactory Organ – Smell/Orientation
Great sniffer of the deep blue - Hammerhead

22. Nares instead of nostrils
Detects dissolved chemicals

23. Can detect one part fish extract in 25 million parts water
Equivalent of 10 drops of blood in a municipal swimming pool
What do sharks like to smell?

24. Strong smells = Instant Attack!

25. Gills get extra beat
Then shut to swim fast!

26. Hammerheads can smell over 3 miles away!
Orientation
Swimming helps smell
Hammerheads can smell over 3 miles away!
Different smells lead to different direction

27. The ear of the shark

28. Very sensitive to low-frequency sounds
Like that of a struggling fish or subwoofer!
Is that a fish or the new
Fitty cent song?

29. And can determine texture!
The last sense – TASTE!!!
Teeth act as taste buds!
And can determine texture!

30. Shark Behavior

31. Feeding Frenzies

32. Shark Killer? Have teamed up against sharks
Batter and ram the shark or throw him out of the tank!

33. GREAT WHITE SHARK ATTACK!
Very slow swimming
Tail slap on surface
Flesh removed on first bite 94% of time!

34. Sharks are lazy? Species found in cave with high oxygen levels
Results in sedating effect on shark, like alcohol on humans!

35. NOW GO LEARN MORE ABOUT SHARKS BECAUSE SHARKS ARE…
RAD!!!