| A | B |
|---|
| baleen | Plates in the upper jaw of some whales that strain out the small animals the whale eats |
| barnacle | Small shellfish that attach themselves to underwater objects and to whales |
| blowhole | A whale's nostrils on the top of its head |
| blubber | The layers of fat on a whale's body |
| breaching | The act of a whale leaping out of the water and splashing down on its back |
| calf | A baby whale |
| echolocation | The way whales use sound to navigate and find things under water |
| endangered | Reduced to the point of being nearly extinct |
| fluke | The two wing-shapes on the end of the whale's tail |
| krill | Small shrimp-like creatures which are eaten by baleen whales |
| lobtailing | Repeated action in which a whale raises its tail high into the air and slaps it down on the water |
| migration | The journey from one place to another to feed or to have babies |
| orca | Another name by which the killer whale is known |
| plankton | Tiny plants and animals floating on the surface of the sea |
| pod | The name for a group of whales that travel together |
| porpoise | A small, toothed whale |
| scrimshaw | The carving done on the bones and teeth of sea mammals |
| sounding | The deep diving action of whales to escape danger |
