| A | B |
| Plankton | a small useless ocean animal |
| dorsal fin | the fin along the midline of the back of cetaceans |
| flukes | the horizontal tail fin on a cetacean |
| blubber | fat on whales and sea animals |
| decibals | a certain unit for measuring how loud something is |
| gestation period | time before one has a baby |
| gular pouch | another word for the whales throat |
| spout | to shoot water out with force |
| endangered | in danger of dying out |
| Balaenopteridae | the family of the Blue Whale |
| musculus | the species of the Blue Whale |
| How long can the Blue Whale live? | the Blue Whale can live up to 100 years |
| How heavy is the Blue Whale? | The Blue Whale is 300,000 pounds |
| How do they survive on such small animals? | They eat more than 7,000 pounds of food |
| Why is the Blue Whale endangered ? | People hunt them for their baleen, fat, meat, and oil |
| How do they communicate? | They make moans that can be heard from 100 mi. away |