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"One of the Acalephae; a name given to a large number of marine animals; and redpresenyted chiefly by medusidae."-Whitney, 1902

Acaleph

"One of the Acalephae; a name given to a large number of marine animals; and redpresenyted chiefly by…

An illustration of Eudendruim ramonsum. The Idrozoi are a class of the phylum of Cnidarians, and in many ways be considered the most primitive Cnidarians.

Eudendrium

An illustration of Eudendruim ramonsum. The Idrozoi are a class of the phylum of Cnidarians, and in…

An illustration of a small jellyfish. Jellyfish are free-swimming members of the phylum Cnidaria. ellyfish don't have specialized digestive, osmoregulatory, central nervous, respiratory, or circulatory systems. They digest using the gastrodermal lining of the gastrovascular cavity, where nutrients are absorbed. They do not need a respiratory system since their skin is thin enough that the body is oxygenated by diffusion. They have limited control over movement and mostly free-float, but can use the hydrostatic skeleton of the water pouch to accomplish vertical movement through pulsations of the disc-like body.

Jellyfish

An illustration of a small jellyfish. Jellyfish are free-swimming members of the phylum Cnidaria. ellyfish…