Tabla de Contenidos:
  • 1. Introducing sharks, skates, rays, and chimaeras
  • What are sharks and how are they classified
  • How many kinds of sharks are there
  • How did sharks get their name
  • Where do shards live
  • When did sharks evolve
  • What are the largest and smallest sharks alive today
  • What is the fastest shark
  • What is the largest shark that ever lived
  • Where can I find fossil shark teeth
  • How can you tell whether a fossil shark lived in a river, a lake, or an ocean
  • Why are sharks important
  • Why should people care about sharks
  • 2. Form and function of sharks
  • What is the metabolism of a shark
  • Are sharks cold-blooded or warm-blooded
  • What kind of teeth do sharks have
  • How many teeth does a shark have during its lifetime
  • Do a shark's teeth change during its life
  • What is the skeleton of a shark made of
  • Does a shark have senses like ours
  • How good is a shark's sense of smell
  • How well can sharks hear
  • How well can sharks see
  • Can sharks see color
  • How do sharks detect electric fields
  • Do sharks sleep
  • Do sharks have scales like other fishes
  • How do sharks breathe under water
  • Must a shark keep swimming to breathe
  • How do sharks swim
  • How do a shark's fins function during swimming
  • How long can a shark live out of water
  • Why do hammerhead sharks have such strange heads
  • What kind of brains do sharks have
  • How large is a shark's brain
  • 3. Shark colors
  • Why are so many sharks dark on top and light on the bottom
  • Which sharks aren't countershaded
  • Are any sharks colorful
  • Are any sharks colorless
  • What causes the different colors of sharks
  • Is there a reason for the color patterns of sharks
  • What color are a shark's eyes
  • Do a shark's colors change as it grows
  • Do a shark's colors change at different times of the day or in different seasons
  • Is there much geographic variation in the color of a shark species
  • 4. Shark behavior
  • Are sharks social
  • Do sharks form schools
  • Can sharks tell one another apart
  • Do sharks fight
  • Are any sharks territorial
  • do sharks socialize with other kinds of animals
  • Why do sharks swim at the surface with their dorsal fins sticking out
  • How smart are sharks
  • Do sharks use tools
  • Do sharks play
  • Do sharks talk
  • What is "tonic immobility"
  • 5. Shark ecology
  • Do sharks migrate
  • How do sharks navigate
  • How many shark species live in rivers and lakes
  • How far down in the ocean do sharks live
  • Which geographic regions have the most species of sharks
  • Which sharks are most or least abundant
  • When during the day are sharks most active
  • How do sharks survive the winter
  • How do sharks survive droughts
  • Are there sharks in the desert
  • Do sharks have any enemies other than humans
  • How do sharks avoid predators
  • Do sharks get sick
  • Do sharks have parasites
  • How can you tell if a shark is sick
  • Are sharks good for the environment.
  • 6. Reproduction and development
  • How do sharks reproduce
  • Do sharks lay eggs or do they give birth to live young
  • How long do female sharks hold young in their body
  • How long does it take for a baby shark to hatch from an egg case
  • Where do sharks lay their egg cases or give birth
  • Do sharks give birth or lay their egg cases at the same times and places every year
  • How many young does a mother shark produce
  • How often do sharks reproduce
  • What is a baby shark called
  • Are all the baby sharks in a mother full siblings
  • Do sharks care for their young
  • How is the sex of a shark determined
  • Can sharks reproduce asexually
  • Is there such a thing as a hybrid shark
  • Do male and female sharks live together
  • At what size and age do sharks mature
  • How long do sharks live
  • How fast do sharks grow
  • How can you tell the age of a shark
  • 7. Foods and feeding
  • What do sharks eat
  • How do sharks find food
  • How do sharks catch their prey
  • When do sharks feed most
  • How often must sharks feed
  • Do sharks chew their food
  • How do sharks eat hard-shelled animals
  • Do sharks store their food
  • Must a shark turn on its back to feed
  • Do sharks cooperate with one another to feed
  • 8. Sharks and humans
  • Do sharks make good pets
  • What is the best way to take care of a pet shark
  • Are any medicines made from sharks
  • Do sharks feel pain
  • What should I do if I find an injured shark
  • What should I do if I find a shark that looks diseases
  • How can I see sharks in the wild
  • How can I see sharks in captivity
  • 9. Shark problems (from a human's viewpoint)
  • Are some sharks pests
  • Can there be too many sharks in an area
  • Are sharks dangerous to people
  • Why do sharks attack people
  • How likely are shark attacks
  • Can scientists estimate the size and species of a shark from bite marks
  • How can sharks be repelled
  • Do sharks have diseases and are they contagious
  • Is it safe to eat sharks
  • What should I do if I'm attacked or injured by a shark
  • 10. Human problems (from a shark's viewpoint)
  • Are any sharks endangered
  • Will sharks be affected by global warming
  • Are sharks affected by pollution
  • How are sharks affected by litter
  • How do people catch sharks
  • Why do people hunt sharks
  • How are shark fisheries managed
  • What is bycatch and can it be reduced
  • What is finning
  • Is there such a thing as shark leather
  • Is there such a thing as shark jewelry
  • What other parts of sharks are used by humans
  • Are boats dangerous for sharks
  • What can an ordinary citizen do to help sharks
  • 11. Sharks in stories, media, and literature
  • What roles do sharks play in religion and mythology
  • What roles do sharks play in Western religions
  • Did early philosophers and naturalists mention sharks in their writings
  • What roles do sharks play in various cultures
  • What roles do sharks play in popular culture
  • What roles have sharks played in are and literature
  • 12. "Sharkology"
  • Who studies sharks
  • Can anyone study sharks
  • Which species are best known
  • Which species are least known
  • How do scientists tell sharks apart
  • How do scientists study the movements of large sharks
  • Appendix A. Sharks, skates, rays, and chimaeras of the world
  • Appendix B. Organizations that promote the study and conservation of sharks
  • Appendix C. Websites that provide useful and accurate information on sharks.