The phylum Cnidaria is full of diverse animals that arm themselves with stinging cells called nematocysts. They can be found all over; shallow or deep, saltwater or freshwater
Tuesday, April 24, 2012
How have Cnidarians evolved over time?
Over time, Cnidarians have changed from being rooted to one place over their lifetime-like the Anthozoa class- to a type of creature that is at one point able to move around freely.
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