| 1 | For fish that have evolved to migrate and breed along a free-flowing river, large reservoirs can be a death sentence. | |
| 2 | When the September run is good, Turner can take up to 2, 500 eels. | |
| 3 | Given their dependence on the single species, could they have made the migration without access to the whales? | |
| 4 | The salmon are returning to Alaska from the open ocean in their millions in order to spawn. | |
| 5 | After being at sea for several years, salmon return in summer to the sites of their birth to spawn and die, and hardly feed along their final journey. |
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