Barrel jellyfish is a very beautiful jellyfish! and this one in the video is really big, probably the diameter exceeds 50/55 cm, as can be seen from the proportions of the undersigned's hand. It is one of the classic jellyfish of the Mediterranean Sea, perhaps the most common to encounter. Here on intotheblue.it we have published it numerous times.

Barrel Jellyfish (Rhizostoma pulmo Macri, 1778)  is a jellyfish from the Rhizostomatidae family. ...