| 1. | It favors coastal reef slopes rich in hydroids and sea anemones.
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| 2. | They are commonly known as tree hydroids or sea fan hydroids.
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| 3. | They are commonly known as tree hydroids or sea fan hydroids.
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| 4. | The hydroids also are attacking young cod and haddock directly.
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| 5. | Normally the hydroids root themselves to the ocean floor.
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| 6. | Males develop a charcoal grey colouration and are highly hydroids and polychaete worms.
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| 7. | For a list of species, see list of hydroids of the Houtman Abrolhos.
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| 8. | The hydroid colony itself closely resembles the tentacles of a medusa or a polyp.
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| 9. | Hydroids are related to corals and jellyfish.
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| 10. | The " hydroid " cnidarians typically which grow up into large, elegantly branched forms.
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