On the bottom, and the right.
Freshwater river sample - Wissahickon Creek. Near the bank.
Bottom, near the middle.
Freshwater river sample - Wissahickon Creek. Near the bank.
Bottom right.
Freshwater river sample - Wissahickon Creek. Near the bank.
From a large vernal pool. 1000x magnification. Two visible cells attached by retractable stalks to substrate. Very tiny, snapping back and forth on their stalks every couple of seconds.
From a large vernal pool. 1000x magnification
in a small goldfish pond