Dolphins and Porpoises

What is the largest species of dolphin?

• orca

• dolphin

• porpoise

• whale

What is the author's purpose for writing this passage?

• to persuade readers to watch for dolphins and porpoises when they visit the ocean

• to entertain readers with a funny story about dolphins and porpoises

• to teach readers the similarities and differences between dolphins and porpoises

• to inform readers that dolphins and porpoises are endangered species

Both dolphins and porpoises...

• are gray fish found in the Atlantic Ocean

• live in large pods of 12 or more

• have the same type of teeth

• are types of whales

Explain the differences between a dolphin's dorsal fin and a porpoise's dorsal fin.

• A dolphin's dorsal fin is taller and more pointed. A porpoise's dorsal fin is shorter and more rounded.

• A dolphin's dorsal fin is shorter and more rounded. A porpoise's dorsal fin is taller and more pointed.

• A dolphin's dorsal fin is taller and more rounded. A porpoise's dorsal fin is shorter and more pointed.

• A dolphin's dorsal fin is shorter and more pointed. A porpoise's dorsal fin is taller and more rounded.

Dolphins and porpoises both

• breath air

• are warm-blooded

• are born alive

• use echolocation

• all of these

Which of the following characteristics is more like a dolphin?

• shy

• social

• live less than 15 years

• short rounded dorsal fin

Which of the following characteristics is more like a porpoise?

• live for over 50 years

• taller pointed dorsal fin

• spade shaped teeth

• cone shaped teeth

Both porpoises and dolphins are ​ (a)   Like all mammals, dolphins and porpoises are ​ (b)   Mammals have ​ (c)   and breathe air. The largest species of dolphin is the ​ (d)   It hunts penguins, ​ (e)   and other whales.

• whales.
• warm-blooded.
• lungs
• orca.
• walruses

Draw and label three differences between dolphins and porpoises.