Chiropsalmus quadrumanus
Chiropsalmus quadrumanus, commonly known as the four-handed box jellyfish, is a species of box jellyfish found in the western Atlantic Ocean, the Gulf of Mexico and the Pacific Ocean. The sting is venomous and dangerous to humans, especially children.
Olindias phosphorica
Olindias phosphorica, or cigar jellyfish, is a species of hydrozoan from the central and eastern Atlantic and the Mediterranean Sea.