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vShark
Coastal intelligence
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Experimental prototype — not an official warning system

City of Joondalup

Conceptual operational view of one coastal local government. Demonstration only — City of Joondalup is not the owner or target customer of vShark.

← Western AustraliaPerth MetroCACHEDRisk 18 Sept 2026, 10:47 pm

Model audit · 18 September 2026

What vShark could have known at 10:00 AWST is kept separate from what became public after the incident. The frozen reconstruction does not raise the live 0–100 because a fatality occurred.

Open 10:00 vs after reconstruction →

Municipality coastline

Closed coastline (official): Marmion through Burns Beach until noon Saturday 19 September 2026. Neighbouring Stirling beaches (Trigg, North Beach) are outside this LGA and are not covered by this closure.

LocationTypeOfficialRiskConfidence
MarmionBEACH—MODERATE28/100MODERATE
SorrentoBEACH—MODERATE37.9/100MODERATE
HillarysBEACH—MODERATE24.3/100MODERATE
WhitfordsBEACH—MODERATE28/100MODERATE
MullalooBEACH—MODERATE24.3/100MODERATE
Ocean ReefBEACH—MODERATE28/100MODERATE
IlukaBEACH—MODERATE37.9/100MODERATE
Burns BeachBEACH—MODERATE24.3/100MODERATE

Decision log (demonstration)

  1. Official closure / warning, if present, is displayed first and is not overridden.
  2. vShark model output is experimental and uncalibrated (0.1.0-dev).
  3. No live DPIRD or SLSWA feed is connected — confidence cannot be HIGH.
  4. Official instruction: Water Police 9442 8600, SharkSmart, SLSWA, City of Joondalup.
  5. Incident reconstruction for 18 September 2026 is a frozen audit, not an operational replay of a warning that was issued.

Open Sorrento 18 Sep 2026 case study →

Data coverage

Where vShark knows little is as important as where it knows more. Missing coverage does not mean low risk.

  • Shark observation coverageLOW

    Curated public notices for 18 September 2026 (SharkSmart incident, Boyinaboat report). Not a live tagged-receiver feed. Records are CACHED and do not enter the 0–100 as live detections.

  • Ocean coverageMODERATE

    Open-Meteo marine SST and wave height at a regional centroid — not a beach sensor.

  • Weather coverageMODERATE

    Open-Meteo forecast weather at a regional centroid.

  • Ecology coverageLOW

    No live prey, whale, seal or productivity feed. Seasonal notes are hypotheses or climatology.

  • Human exposure coverageLOW

    Estimated from popularity class, weekday/weekend and swell. Not a head-count.

  • Sensor coverageNONE

    No acoustic, camera, drone or eDNA adapters connected.

  • Historical coverageMODERATE

    Frozen model audit for 18 September 2026 is on file. Not a complete incident archive.