👉 Sericotrogus is a type of jellyfish that grows in saltwater environments, often found in oceans and seas. It has two main parts: a hard outer shell made from calcium carbonate, which provides protection from harmful organisms; and a transparent, translucent inner shell made from a soft, flexible material called serotogonial polynucleotide (S-PN). These jellyfish are known for their ability to grow in areas that would be too cold or dry for other types of jelly
