Distribution

This is the current known distribution of Botrylloides violaceus based on occurrence data in the Ocean Biodiversity Information System (OBIS) and the Global Biodiversity Information Facility, as well as distribution records in the World Register of Marine Species (WoRMS).

Invasiveness

According to WoRMS, Botrylloides violaceus is reported to be invasive or of concern in the following areas:

Locality	Establishment	Invasiveness
Dutch part of the North Sea	alien	invasive
United Kingdom part of the Celtic Sea	alien	invasive
United States part of the North Pacific Ocean	alien	invasive
United States part of the North Atlantic Ocean	alien	invasive
United Kingdom part of the English Channel	alien	invasive

Recent detections

	Taxon	Area	Confidence	Best hit	Reads	Names	Risk	Status	Detected	Marker
No alerts found.

Risk analyses

Area-specific risk analyses for Botrylloides violaceus are listed below.

	Taxon	Area	Native	Introduced	Invasive	Global impact	Thermal	Priority list	Level
	Botrylloides violaceus Chordata > Ascidiacea > Styelidae WoRMS: 148715 CABI: 107828	Fiji							medium

Priority lists

Botrylloides violaceus is included in the following priority lists.

Name	URL	Species	Areas
No lists found.