| A | B |
| mammal | an animal with hair, that bears live young, and nurses it s young |
| mysticete | a baleen whale |
| fathom | 6 feet of ocean depth |
| shoals | shallow areas of the ocean |
| cetologist | a scientist that studies whales |
| environment | the world around where and animal or plant lives |
| extinct | when a species of plant or animal no longer exists |
| pod | a group of whales |
| marine biologist | a scientist who studies the plants and animals of the oceans |
| evolution | the slow and gradual change of a species over a very long period of time |
| behavior | what an animal or a plant does |
| odontocete | a whale with teeth |
| lead line | a tool used tomeasure the depth of water in the ocean |
| oceanographer | a scientist who studies the physical characteristics of the oceans' water |
| echolocation | the ability to determine location by sending sound out and recording the amount of time it takes to return |