Jellies

Jellies Description

A simple animal, closely related to corals, characterized by a symmetrical body and trailing arms. Usually grows in a stalked form (called the polyp) before detaching into a free-swimming form called the medusa. Some jellies remain stalked their whole lives. Mixotrophs—most are predatory, but some obtain nutrients from photosynthesis or symbiotic photosynthesizers. Nerve net—jellies predate the evolution of a nerve cord in the tunics. Complex—some jellies on this world have achieved a size and complexity unknown on Earth. Evolutionary origins unknown. Earth analog: jellies.