Watersipora subatra is a widespread fouling species, found from Japan, Indonesia, Europe, California, Australia, and New Zealand.
This species was earlier identified as W. subtorquata.
 |
SEM of specimen from Sydney, New South Wales |
 |
SEM of specimen from Merimbula, New South Wales |
 |
Thanks to Jan Watson for the photo, December 2009 (Port Phillip Bay). |
A colour photograph by Karen Gowlett-Holmes is available.
Original description: Schizoporella aterrima var. subatra Ortmann, 1890.
Locality: Japan Sagami Bay.
Holotype: MZS 002, Ortmann Collection, Sagami Bay, Japan.
From Ortmann, 1890:
 |
 |
 |
 |