Intertidal Organisms EZ-ID GUIDES


on this species


Zostera japonica (Japanese eelgrass)

photo of Japanese eelgrass
Copyright © 2006 Mary Jo Adams


This species is occasionally seen in Southern British Columbia and Washington.  Also known as dwarf eelgrass and narrow-bladed eelgrass, Japanese eelgrass belongs to the family Zosteraceae.  It is nonnative to the West Coast of North America.  With a blade length not exceeding 8 inches (20 cm.) and blade width of only 1/8th inch (2-3 mm.), this species is smaller than the native Z. marina.  In addition, it grows in the mid intertidal zone while Z. marina is found in low intertidal and subtidal zones.  Like Zostera marina, it is found on beaches with a soft substrate, i.e. sand or mud.  Zostera japonica has also been known under the scientific names Z. nolti, Z. nana, and Z. americana


This page was created by Mary Jo Adams on 9/13/06.



photo of Japanese eelgrass


photo of Japanese eelgrass and common eelgrass