An ostracod (microscopic crustacean) on algae. HDR picture taken in polarized light.
Ostracods typically live in small calm bodies of water that dry fast in summer. Their bodies are encased in shells, which make them resemble bivalves.
Hydra sp. - a freshwater cnidarian. The size of the animal is about 1 cm. Muscle folds are clearly visible along the body. The hydra is in a contracted stage. Single shot taken with an electronic flash.
Hydra sp. a freshwater cnidarian. The size of the animal is about 1 cm. DIC