What to Look For

Aquatic Invasive Species (AIS) are species that enter into new ecosystems and spread, causing damage to native species and their habitants. These species are spread beyond their normal distribution, often as a result of human activities, and can threaten valuable environmental, agricultural or personal resources by the damage they cause.
Diplosoma Tunicate (Diplosoma listerianum)
Diplosoma listerianum, Native to northern Europe. It has invaded from New Hampshire to Connecticut, remaining near shore, in protected areas, attached to docks, other organisms and hard surfaces.
●    Forms thin (less than 2 mm thick) flat, soft, jelly-like sheets
●    Milky, transparent appearance with scattered grey or brown pigmented cells
●    Individual zooids are approximately 0.2 cm long