Jellyfish diameter; the tentacles and mouth parts usually extend beyond this bell dimension. The smallest jellyfish are the peculiar creeping jellyfish in the genera "Staurocladia" and "Eleutheria", which have bell disks from to a few millimeters in diameter, with short tentacles that extend out beyond this, which these jellyfish use to move across the surface of seaweed or the bottoms of rocky pools. Many of these tiny creeping jellyfish cannot be seen in the field without a hand lens or microscope; they can reproduce asexually by fission (splitting in half). Other very small jellyfish, which have bells about one millimeter, are
Princess Jellyfish the fifth volume sold about 55,000 copies. Volume six sold over 60,000 copies in its first week, and exceeded 100,000 copies sold in total the week after. Princess Jellyfish "Princess Jellyfish" centers on Amamizukan, an apartment building in Tokyo, where the only tenants are otaku women, and where no men are allowed. While each character has her own particular fixation, the protagonist is Tsukimi Kurashita, whose love of jellyfish stems from memories of her deceased mother taking her to an aquarium and linking the lace-like tendrils of jellyfish to the dresses of princesses. Tsukimi hopes to become an illustrator and