This sample was collected from the pond behind Louisa County High School. The species was barely visible under the microscope. It did not move.
This protist was found in a sample collected from the pond behind Louisa County High School. It moved rapidly under the microscope using cilia. It moved away from the objects seen in the pictures.
The nematodes /ˈnɛmətoʊdz/ or roundworms constitute the phylum Nematoda. They are a diverse animal phylum inhabiting a very broad range of environments. Nematode species can be difficult to distinguish; and although over 28,000 have been described, of which over 16,000 are parasitic, the total number of nematode species has been estimated to be about 1 million. Unlike cnidarians and flatworms, nematodes have tubular digestive systems with openings at both ends.