Masthead

 

 

 
Current Creature- Puget Sound Sealife

Hydroids

 
Hydroid

Common name:
Hydroid

Scientific name:
Tubularia

Size:
up to 5 cm long, and may be 1 cm in diameter

Distinctive features:

pale orange-pink polyps that grow on crooked stalks


Where it lives:
attached to rocks or other hard substrates, may be mistaken for seaweed



Many thanks to Dr. Megan Dethier's Spring 2002 Invertebrates Class at the UW's Friday Harbor Labs for researching information on many of the invertebrates featured on this site.

Photo courtesy of Kim Stark, King County DNR



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Hydroid Factoid:
Hydroids are actually colonies of individuals called polyps, which grow on a common stalk. Polyps in a typical colony each have specific jobs and look different from each other. These jobs include defense, feeding, and reproduction. In order to build up their own colony the hydroids reproduce by budding; all polyp types can bud. New colonies in Tubularia are formed when reproductive polyps make little polyps that stay attached until they develop into mature polyps. The mature polyps drop away from the "parent" and settle on the ground, then grow a new colony.

 

Puget Sound Action Team
Office of the Governor
P.O. Box 40900, Olympia, Washington 98504-0900
Toll-free (Washington only): (800) 54-SOUND, Outside Washington: (360) 725-5444

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