Nitrogen fixing bacteria (Rhizobia) found inside a clover root nodule. The pink color is hemoglobin, the same oxygen carrying protein found in red blood cells.
Amoebae (Single celled microscopic animals) using pseudopodia to move and catch prey.
Froghopper insect (Cercopoidea) nymph in plant sap underneath an oak leaf. Also known as a spittle bug because the sap the nymphs use resemble saliva.