What is another word for diving duck?
Pronunciation: [dˈa͡ɪvɪŋ dˈʌk] (IPA) 
A diving duck is a type of aquatic bird that subsists by diving for its prey under the water. There are several synonyms for the term diving duck, such as sea duck, bay duck, and surf duck, as well as puddle ducks, which are a subclass of diving ducks that prefer shallow, freshwater environments. The various species of diving ducks exhibit diverse physical characteristics, including differences in size, color, and bill shape, which reflect their different habitats and feeding habits. Some of the most common species of diving ducks include the canvasback, the red-breasted merganser, the bufflehead, and the scaup, which are all beloved by bird watchers and hunters alike.
