| 1 | This substance is extracted from seaweed. | |
| 2 | They come out only at night to feed on sponges and algae. | |
| 3 | Residents say algae-eating silver carp introduced with great fanfare this year have died. | |
| 4 | So the next time you see a chunk of seaweed ... notice the beauty of it, yes. | |
| 5 | The main way that carbon dioxide is absorbed by the ocean is through photosynthesis by planktonic algae. |