Scyphozoa {jellyfish}| have tentacles that move body through water and have thick mesoglea. Largest jellyfish is Cyanea, with 30-meter tentacles and four-meter diameter. Jellyfish have a statocyte with granules on hair cells. Marginal ganglia supply jellyfish rhythmic beats.
Jellyfish can have diploid sexual polyps and then have diploid asexual forms {medusa}|.
Jellyfish can have diploid sexual forms {polyp, jellyfish}| and then have diploid asexual medusa.
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Date Modified: 2022.0225