In this paper, we use confocal and transmission electron microscopy to contrast the structure and development of tentacles in the moon jellyfish, Aurelia species 1. Such diversity suggests cryptic distinctions exist in tentacle function.
While cnidarian tentacles are generally characterized as structures evolved for feeding and defense, significant variation exists between the tentacles of different species, and within the same species across different life stages and/or. Tentacles armed with stinging cells (cnidocytes) are a defining trait of the cnidarians, a phy-lum that includes sea anemones, corals, jellyfish, and hydras.
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