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The Non-Bony Fish
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The Non-Bony Fish
Shark Conservation
Shark Attacks
What things do you know about me?
T/F? Sharks are all predators with big teeth.
T/F Sharks do not have bones.
T/F Sharks do not get cancer.
T/F Shark attacks represent a significant danger to swimmers.
T/F Sharks must keep moving to breath.
T/F Shark skin feels like sand paper.
T/F Sharks are ancient fishes, having changed very little in 400 million years.
- In 1996, toilets injured 43,000 Americans. Sharks injured 13.
- You have a one in 63 chance of dying from the flu and a one in 3,700,000 chance of being killed by a shark.
- You have a one in 218 chance of dying from a fall and a one in 3.7 million chance of being killed by a shark.
- 1n 1996, buckets and pails injured almost 11,000 Americans. Sharks injured 13.
- In 1996, room fresheners injured 2,600 Americans. Sharks injured 13.
- The U.S. averages 19 shark attacks a year. Lightning kills about 41 people a year in coastal states alone.
Agnatha
Lamprey
Hagfish
Image from:
http://www.wired.com/images_blogs/wiredscience/2011/03/hagfish-linda-snook-noaa-cbnms.jpg
Lamprey are parasites
Hagfish are scavengers
Hagfish use slime as a dense
Chondrichtyes
Sharks and Rays
https://sharksrays.org/
Shark Adaptations
Rays and Skates
Sharks
Sensory Adaptations
Shark Reproduction
Rays use pectoral fins to swim and have mouths on the ventral side
http://www.southernfriedscience.com/?p=14393
Sharks use their caudal fin to swim and have mouths in the front
Smell / Taste
Lateral Line
Sound
Ampullae of Lorenzini
Sight
Feeding Adaptations
External Anatomy
Lots of teeth
Filter Feeding
Dorsal Surface
First Dorsal Fin
Second Dorsal Fin
Gill Slits
Caudal Fin
Nostrils
Claspers
Pectoral Fins
Anal Fin
Pelvic Fins
Ventral Surface