Acartia clausi is a copepod species belonging to the Acartiidae family. These tiny aquatic organisms have a varied diet, as they are omnivores, consuming a range of food sources. Despite their small size, individuals of Acartia clausi can grow to a maximum length of 1.47 millimeters.Reproductive-wise, Acartia clausi follows a broadcast spawning strategy. This means that they release their eggs and sperm into the water, where fertilization occurs externally. This method of reproduction allows for the dispersal of their offspring throughout the aquatic environment. In terms of locomotion, Acartia clausi relies on drag-powered swimming to move around. This entails using their appendages and body shape to generate thrust and move through the water. This mode of swimming is a common adaptation in copepods and other small aquatic organisms, allowing them to efficiently navigate their aquatic habitats.