Clytia hemisphaerica is a small hydrozoan-group cnidarian, about 1 cm in diameter, that is found in the Mediterranean Sea and the North-East Atlantic Ocean.[1]Clytia has the free-swimming jellyfish form typical of the Hydrozoa, as well as vegetatively propagating polyps.
Clytia hemisphaerica has emerged as a promising model organism as its life cycle, small size, and relatively easy upkeep make it conducive to experimental manipulation and maintenance in a laboratory setting.[2] Some examples of studies already conducted in Clytia include those looking at embryonic development,[3][4] differential patterns of gene expression during life stages,[5] and wound healing. Clytia’s genome was sequenced in full in March 2019.[5]