These samples were collected by the use of an oyster dredge towed by the ship Særún at 10-20 m water depth, in the archipelago off Stykkishólmur, Iceland.
Larger animals were photographed on a paper with 5 mm distance between the crossing lines. Smaller animals are epifauna organisms that were detached from the larger ones.
freshwater plankton sample, from overwintered birdbath water basin, very shallow
freshwater plankton sample, from overwintered birdbath water basin, very shallow
I don't really know what diatom it is, Surirella might be wrong