Kim Taylor / Amoeba proteus among pond debris, UK.
Visuals Unlimited / The protist (Amoeba proteus) moves by means of its pseudopodia or false feet. Note the nucleus in the center, a spherical contractile vacuole (an organelle which pumps excess of water out of the cell)...
Visuals Unlimited / (Amoeba proteus) a protozoan with extended pseudopods. LM X25.
Visuals Unlimited / Living (Spirulina major) Cyanobacteria with an Amoeba. DIC, LM X125.