Algae

Microscopic Filamentous Green Algae
Microscopic Filamentous Green Algae ( plankton and attached )
Microscopic planktonic colonial green algae
Microscopic planktonic colonial green algae
Microscopic Desmids
Microscopic Desmids ( plankton, freshwater )

Mallard

Anas platyrhinchos

Size: 20-28"

Habitat: in and around water

Notes:
There are many types of wild ducks, found worldwide in all freshwater and marine environments. The Mallard ( male shown ) is typical. Females are much drabber. Only domestic ducks are white.