Clubbed tunicate specimen showing the elongated club-shaped body and stalk. Yale Peabody Museum · CC0 1.0
What
Clubbed tunicate is recorded by a competent New Zealand authority as an introduced or managed marine biosecurity subject.
Source context (Environment Canterbury; Ministry for Primary Industries): Styela clava, a solitary ascidian/sea squirt, native to the northwest Pacific.
Why
The source identifies ecological or marine biosecurity risks relevant to surveillance and spread prevention.
Where
Known presence and management boundaries are location-specific and must be checked against current authoritative controls.
Established knowledge
For consequential field decisions, consider the knowledge state and cited sources for each claim, and consult authoritative guidance where appropriate. Information and reliance terms
50% reference coverage — not scientific certainty or ecological progress
Identification
NZ status
Ecological impact
Sources
Open knowledge
These are parts of the public picture that could become clearer with better evidence.
Environment Canterbury — Clubbed tunicate (what)authoritative · Supports the attributed what context. Source scope and dates apply; this does not establish current local presence, current legal status or media reuse permission.
Ministry for Primary Industries — Clubbed tunicate (what)authoritative · Supports the attributed what context. Source scope and dates apply; this does not establish current local presence, current legal status or media reuse permission.
Field observations connect sightings and signs with a place, time and source. They can support evidence after review. This dossier does not accept public submissions.
No field observations are published for this Target.
Commentary
Local experience, corrections and context help explain the public record. Commentary is not verified knowledge. This dossier does not accept public comments.
No commentary is published for this Target.
Questions and Missions
What can the sources tell us, and what still needs evidence? Explore dossier discoveries and research questions to understand this Target. Research leads identify knowledge gaps; they are not field assignments.