Animal Sight


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Animal Sight

  1. 1. How Animals Perceive The World By: Stacy Bustamante
  2. 2. Bumble Bee The visual receptor cells of bees allow the to transduce ultraviolet light better than we can with our normal visual receptor cells. The bees have compound eyes; hundreds of single eyes (called ommatidia) arranged next to each other, each with its own lens and each looking in a different direction.
  3. 3. Bumble Bee Vision
  4. 4. Dog Dogs only see very pale shades of color, and many have vision that is comparable to a human who is red-green color blind , which means they can't tell the difference between red and green. However, they do have better peripheral and night vision than us, with eyes that are much more sensitive to movement.
  5. 5. Dog Vision
  6. 6. Squirrel Though humans can see the entire visible light spectrum and would be able to appreciate the rich greens of the grass in the meadow on the left, prairie dogs and squirrels are red/green color blind, and only perceive the blues, yellows, and greys of the landscape
  7. 7. Squirrel Vision
  8. 8. Sea Turtle Sea Turtles have a special feature which perhaps evolved to help them see on the dark sea floor; their individual photoreceptors contain red oil droplets which obstruct shorter light wavelengths. As a result, they can easily pick up reds and oranges and yellows, but cannot really perceive any of the longer light wavelengths such as green or blue or violet.
  9. 9. Sea Turtle Vision
  10. 10. Snake Snakes will use their normal eyes during the day, but at night it will change over to its other pair of "eyes". These pit organs can pick up infrared heat signals from warm objects in their surroundings. During the day, a snake's vision is very dependent on movement.
  11. 11. Snake Vision
  12. 12. Shrimp Shrimp have the least developed vision on our list. They have compound eyes similar to an insect, but give much less detail. Luckily, shrimps are very good at picking up signals from sudden movements in their surroundings. This is one of their best defences against predators
  13. 13. Shrimp Vision
  14. 14. Bird Daytime birds see a greater range of colors than humans, including ultraviolet light. As humans, we have never actually seen many of these colors, so a bird's actual vision would be very difficult (if not impossible) to emulate here. It is generally accepted that color is much more vibrant in a typical bird's vision than it is in humans. Hunting birds such as the eagle, kestrel and vulture are know to have outstanding binocular vision, enabling them to easily spot prey from thousands of feet away.
  15. 15. Bird Vision
  16. 16. The End ( Applause, please =) )