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Hydroid
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a small, plant-like aquatic organism belonging to the class Hydrozoa, often forming branching colonies
hydroid
n
Example
The aquarium's new exhibit features a variety of hydroids and other fascinating sea creatures.
The marine biologist studied the unique structures of the hydroid colony.
Hydroids can often be found attached to rocks and seaweed in shallow waters.
While snorkeling, we observed a beautiful array of colorful hydroids swaying in the current.
Some species of hydroids have stinging cells similar to those of jellyfish.
