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The phylum Cnidaria includes anemones, corals, jellyfish and sea pens. The basic body form of these animals is simple, consisting of a stomach sac with one opening.
Ten Facts About Jellyfishes
Jellyfish have a bad reputation for the threats they can pose to swimmers and holiday makers visiting beaches around the world.
Jellyfish (Class Scyphozoa)
Jellyfish are invertebrates (they do not have a backbone). They belong to the Phylum Cnidaria (pronounced ni*da"ri*a).
The Life Cycle of a Jellyfish
The most recognized image of a jellyfish is that of the adult jellyfish, also called a medusa, with its bell-shaped body and long tentacles. But there is more to a jellyfish than a medusa.
Ten Facts About Coral
In this article, I'd like to explore ten things we should all know about coral, what makes them animals and what makes them so unique.
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