Freshwater mussels are bivalve mollusks, just like oysters, clams, and saltwater mussels. This means they have two hard shells to protect their soft bodies. There are over 300 species of freshwater mussels native to North America — more mussel species than anywhere else in the world! But, freshwater mussels are the most “at risk” animal group in the United States.
Watch this video, which explains why the freshwater mussel is an important part of our natural environment. As you watch, listen for information on 1) why freshwater mussels are important and 2) what is being done to prevent the decline of their population in the Delaware Estuary.
After you’ve watched the video, read the transcript and use Highlight It to identify some key information presented in the video that answers the question presented.
| Keyboard Shortcut | Action |
|---|---|
| Space | Pause/Play video playback |
| Enter | Pause/Play video playback |
| m | Mute/Unmute video volume |
| Up and Down arrows | Increase and decrease volume by 10% |
| Right and Left arrows | Seek forward or backward by 5 seconds |
| 0-9 | Fast seek to x% of the video. |
| f | Enter or exit fullscreen. (Note: To exit fullscreen in flash press the Esc key. |
| c | Press c to toggle captions on or off |
Highlight the text that helps you answer the prompt.