We need your help to stop the spread of introduced species!

Observant thoughtful citizens are critical in reducing the spread and negative impact of non-native species. In the effort to fight the spread of invasive species we are asking you to look for, photograph, and report sightings of problem species threatening to invade new areas along our coasts. There are currently three species in which we are activity seeking information, Asian Kelp, Wakame (Undaria pinnatifida); the Chinese Mitten Crab (Eriocheir sinensis), and the tunicates such as D vex (Didemnum vexillum).

 See the latest news regarding the D vex invasion in Alaska.

San Francisco Bay and Pillar Point Harbor in Half Moon Bay	The Mid-Atlantic: Cheaspeake Bay, Delaware Bay, Hudson River, and New Jersey	Alaska and the US West Coast
Asian Kelp, Wakame (Undaria pinnatifida)	Chinese Mitten Crab (Eriocheir sinensis); Mitten Crab WATCH	itunicate; Plate Watch