| Cormorants and anhingas live in freshwater wetlands, swamps, lakes, rivers, and estuaries. |
| Although it counts as a sea fish, the lamprey goes up rivers to spawn and is indeed most often met in estuaries or the lower reaches of rivers. |
| Many thousands of wintering wildfowl feed and roost among the country's estuaries and salt marshes. |
| Man-eating saltwater crocodiles lurk in nearby estuaries along with the deadly box jellyfish, the most poisonous creature on earth. |
| In the mangrove-lined estuaries that ring most of the 2,000-miles of sparsely inhabited coast you can fish for trevally, queenfish or tarpon. |
| Shellfish such as oysters, mussels, cockles, winkles, whelks and crabs were collected for food from the estuaries and sea-shores. |
