The photomicrographs below have been made by Eckhard Voelcker of material collected from the Rotes Wasser in Germany by Steffen Claus. They could be Clathrella species.
cf Clathrella spec. , about 4 µm in diameter – Rotes Wasser, photomicrograph Eckhard Voelcker
cf Clathrella spec., scale is c. 1.7 µm – Rotes Wasser, photomicrograph Eckhard Voelcker
cf Clathrella spec., c. 48 µm – Rotes Wasser, photomicrograph Eckhard Voelcker
cf Clathrella spec., scales are c. 1.6 µm – Rotes Wasser, photomicrograph Eckhard Voelcker