Mnemiopsis
M. gardeni
M. mccradyi
The warty comb jelly or sea walnut (Mnemiopsis leidyi) is a species of tentaculate ctenophore (comb jelly), originally native to the western Atlantic coastal waters. Three species have been named in the genus Mnemiopsis, but they are now believed to be different ecological forms of a single species M. leidyi by most zoologists.
Read more about Mnemiopsis: Description and Ecology, As An Invasive Species, Genomics