1. SHARKS

2. MAIN CHARACTERISTIC
Cartilaginous skeleton.
Gill slits.
Pectoral fins.
Fusiform body.

3. Clade: SELACHIMORFA, sister group of rays.
Apex predator:
 Great white shark, tiger shark, blue shark and
hammerhead.

4. HABITAT
Adapted for a wide range of aquatic habitats:
Shallow coastal habitats,
Deep-water ocean floor habitats,
Open ocean.

5. REPRODUCTION
Ovoviviparity: Producing eggs that hatch within the
female's body.
Great white shark

6. Oviparity: Expulsion of undeveloped eggs in
the water.
Catshark

7. Viviparity: Giving birth to living offspring that
develop within the mother's body.
Hammerhead

8. FEEDING
Sharks eat almost anything: fishes,
crustaceans, mollusks, marine mammals, and
other sharks.

9. Hammerhead

stingrays
Bull shark

other shark
Smooth dogfish

loobster
Tiger shark

turtles

10. SHARK AND HUMANS
The great white, oceanic tiger, and bull sharks
are large, powerful predators, and may
sometimes attack and kill people.

11. Paula Mejías y María Zafra Tejedor