DIVISION 8 DECK | 7 POINTS

• Dolphins communicate by making high-pitched whistles and clicks which create sound waves. The sound waves travel through the water causing an echo.

DIVISION 8 DECK | 7 POINTS

• Bottlenose dolphins are often seen on television. • Bottlenose dolphins live in groups 10-30 members, called pods.

DIVISION 8 DECK | 7 POINTS

• A dolphin’s brain is adapted to understand sound waves travelling through the water.

DIVISION 8 DECK | 7 POINTS

• Most shark species do not prey on bottlenose dolphins. Dolphins are very good at defending themselves against sharks.

DIVISION 8 DECK | 7 POINTS

• Sharks rarely prey on bottlenose dolphins. Dolphins are very good at defending themselves against sharks.

DIVISION 8 DECK | 8 POINTS

• Alopias vulpinus swings its tail to push water.

• The common thresher is a fast, strong swimmer that has been known to leap clear out of the water.