Hydroid research
Hydroids are freaky, they are actually colonies of polyps (animals that are cylindrical in form and are attached to a substrate at one end and have a mouth at the other) that are growing on a common stalk, from time to time these polyps break free from the main ‘plant’ and begin to grow their own colony.
Images from the aquarium at Auckland Zoo…
There are some great photos of hydroids and anemones on this site:
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