Donald Duck | duck | Daffy Duck | Duck Dynasty | Eider | Tufted Duck | duck (cricket) | Daisy Duck | Duck (cricket) | Duck Amuck | Daffy Duck's Quackbusters | Common Eider | Laysan Duck | Duck | Darkwing Duck | Battle of Duck Lake | Wood Duck | The Wild Duck | Pacific Black Duck | Eider (Amt Kirchspielslandgemeinde) | Duck Patrol | Steller's Eider | Harlequin Duck | Goldeneye (duck) | Eider (river) | Duck Sauce | Donald "Duck" Dunn | The Oregon Duck | the Oregon Duck | The Fat Duck |
Echinoderms form part of the diet of many organisms such as bony fish, sharks, eider ducks, gulls, crabs, gastropod molluscs, sea otters, Arctic foxes and humans.