SHARK

Species

žThere are over 360 species of sharks!

žThey can range in size from small enough to fit in your hand to up to 46 feet!!

žSmallest Shark is the Pygmy Shark

žLargest Shark is the Whale Shark

Scientific Classification

žKingdom: Animalia

žPhylum: Chordata

žClass: Chondrichthyes

žInfraclass: Euselachii

žSuperorder: Selachimorpha

Respiration

žSharks have uncovered gills used for respiration

žExtract oxygen as water passes over the gills

žMost species of shark can pump water over their  gills for when they are not moving using the   spiracle

Diets

žAll sharks are carnivores, which means that they feed other animals

Life Span

žLifespan varies by species

žMost live about 20 – 30 years

žIt is thought that the whale shark can live over 100 years

    Shark usually hatch from eggs at age 10 months

Hunting Habits

žBump and Bite Technique

žShark circles prey often bumping them before the actual attack.

žThey are extremely territorial and will attack other animals that enter their territory.

QUESTION

1.     How many species of sharks are there: 280, 344, or 125?\

a. 160

b. 230

c. 350

d. 260

e. 360

2.     Which is the largest shark species?

a.     Pygym shark

b.     Whale shark

c.      White shark

d.     Hammerhead shark

e.     Dogfish shark

3.     What shark mostly attack human?

a.     Pygym Shark

b.     Whale shark

c.      White shark

d.     Hammerhead shark

e.     Dogfish shark

4.     What is the shark third life cycle?

a.     Eggs

b.     Ovoviviparity

c.      Newborn shark

d.     Youth shark

e.     Adult shark

5.     At what age is a shark ready to hatch?

a.     10 months

b.     11 months

c.      9 months

d.     12 months

e.     10 years