1st Record: CA/Humboldt Bay (2007, Geller et al. 2008; Mackie et al. 2012)

CA/Humboldt Bay (2007, Geller et al. 2008; Mackie et al. 2012)

Level	Vector
Probable	Hull Fouling

Ecological Impact		Competition
Watersipora n. sp. is a newly identified, and still undescribed species, so knowledge of its ecology and impacts is limited. However, it was found to monopolize sites in Humboldt Bay (Geller et al. 2008). Wilson (2001) found that it initially out-competed other species on fouling plates, coming to dominate the surface of the plates.

Ecological Impact		Habitat Change
As Watersipora n. sp. colonies in Humboldt Bay came to dominate the two-dimensional surface of fouling plates, they grew upwards, forming a three-dimensional structure which was utilized by a variety of organisms, increasing the diversity on plates (Wilson 2011).

Species Regional Summary Watersipora n. sp. Puget Sound to Northern California ( NEP-IV )