Olindias phosphorica (syn. Olindias muelleri), or cigar jellyfish, is a species of hydrozoan from the central and eastern Atlantic and the Mediterranean Sea. The Mediterranean sea is a predominantly warm body of water, thus O. phosphorica is a warm-water Jellyfish. Global warming has facilitated the proliferation of the species throughout the Mediterranean sea.
A Cigar Jellyfish's diet consists of plankton mostly.
Their umbrellas grow up to 8 centimeter, have 100-120 secondary tentacles and 30-60 primary tentacles. Their stings do not cause much damage.