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.
Golden Star Tunicate (Botryllus schlosseri)
Origin:
Botryllus schlosseri, is widely distributed worldwide. It has been reported in Eastern Canada and in the Gulf of St. Lawrence for several decades.
Characteristics:
●    Colour varies and may appear orange, yellow, red, greenish-grey, violet or black
●    Grows in a 1 – 3 cm thick mat, limited in size only by the growth area
●    Small pieces can regenerate if settled
Impacts:
●    May out-compete other organisms for food and space, altering natural community dynamics
●    Threaten aquaculture, fishing and other coastal and offshore activities
●    Increase the weight of aquaculture cultivation equipment, making work more demanding
●    Increase operating costs for shellfish producers and processors