Chaetonotus (Chaetonotus) is a gastrotrich subgenus in the family Chaetonotidae.
Marina Beach, or simply the Marina, is a natural urban beach in Chennai, Tamil Nadu, India, along the Bay of Bengal. The beach runs from near Fort St. George in the north to Foreshore Estate in the south, a distance of 6.0 km (3.7 mi), making it the second longest urban beach in the world, after Cox's Bazar Beach. It is a prominent landmark in Chennai.
Chaetonotidae is a family of gastrotrichs in the order Chaetonotida. It is the largest family of gastrotrichs with almost 400 species, some of which are marine and some freshwater. Current classification is largely based on shape and external structures but these are highly variable. Molecular studies show a high level of support for a clade containing Dasydytidae nested within Chaetonotidae.
C. elegans most commonly refers to the model round worm Caenorhabditis elegans. It may also refer to any of the species below. They are listed, first in taxonomic order and, second, alphabetically.