Australian droplet tunicate

Eudistoma elongatum

Identification image pending

What

Australian droplet tunicate is recorded by a competent New Zealand authority as an introduced or managed marine biosecurity subject. Source context (Marine Biosecurity Porthole): Forms large colony masses on hard substrates, muddy tidal habitats, wharf piles, aquaculture equipment, and other artificial structures; can be seen near/below the waterline at low tide.

Why

The source identifies ecological or marine biosecurity risks relevant to surveillance and spread prevention. Source context (Marine Biosecurity Porthole): It forms dense colonies that can smother beaches, rocks, and tide pools; it can displace native species and foul vessels/aquaculture infrastructure.

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.

Distribution
Visual clues
Confusion species
Regional intelligence

Sources & credits

MPI — marine surveillanceauthoritative · Canonical identity, New Zealand marine status and threat context
Marine Biosecurity Porthole — Australian droplet tunicate (what, ecological-impact)authoritative · Supports the attributed what, ecological-impact context. Source scope and dates apply; this does not establish current local presence, current legal status or media reuse permission.
Marine Biosecurity Porthole — Australian droplet tunicate (ecological-impact)authoritative · Supports the attributed ecological-impact context. Source scope and dates apply; this does not establish current local presence, current legal status or media reuse permission.

Prepare related field media

Field observations

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.

Explore Missions and Hunt mode for Australian droplet tunicate

Where is australian droplet tunicate currently established or emerging in New Zealand waters?Research question · evidence needed
What verified evidence distinguishes current ecological impact from presence alone for australian droplet tunicate?Research question · evidence needed

Shout Out

Share this record so others can explore the same question, place or ecological work. The link keeps its context and sources together.

Australian droplet tunicate — The Hit List — NZ Ex Games

Canonical link

/hit-list/marine-australian-droplet-tunicate

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