North Beach

Perth Metro, WA · City of Stirling · Relative human–shark interaction conditions

← WA Perth MetroMOCKAssessed 10 Nov 2026, 3:02 pmModel 0.1.0-dev

Current state

MODERATE25.1/100

Experimental · uncalibrated

Confidence: MODERATE(58%)

Evidence freshness: 10 Nov 2026, 3:02 pm

Dominant evidence class for the index: Environmental habitat suitability

Why?

•No live shark detections — this is not an operational alert

Shark interaction risk is assessed as MODERATE (public index 25.1/100) with moderate combined confidence. Primary drivers: No live shark detections — this is not an operational alert. No live shark-detection feed is connected. This is an experimental development assessment, not an operational warning. Always follow lifeguard instructions, beach closures, and official WA SharkSmart / DPIRD advice. vShark is not a government or SLSA product.

Location map

Species conditions

Great white sharkPs 0.48 · contrib 0.238

Thermal 0.38 · Detection 0.00

Bull sharkPs 0.45 · contrib 0.072

Thermal 0.25 · Detection 0.00

Tiger sharkPs 0.57 · contrib 0.155

Thermal 0.55 · Detection 0.00

Mixed assemblage / transition hypothesis for the Perth metropolitan coast. Do not treat any single species as dominant without evidence.

Recent detections / sightings

No shark observations are stored for this location. That is a data gap, not evidence that sharks are absent. SharkSmart WA is not machine-connected.

CACHED rows are curated public notices, not a live tagged-shark feed, and do not enter the 0–100 as live detections.

Environmental state

No environmental observations stored yet. Open-Meteo ingest writes to a regional centroid.

Human exposure

Class: estimated
Popularity proxy: moderate
Model exposure: 0.45

Activity classes: swimming, ocean swimming, surfing, bodyboarding

Estimated, not observed counts. No false precision.

Persistent spatial context

beach
reef

Geomorphology is persistent context, not a transient observation.

Data gaps

turbidity proxy
live detections
recent detections

Missing data reduces confidence; it does not mean low risk.

Nearby locations

Trigg0.7 km
Marmion2.7 km
Scarborough3.5 km
Sorrento4.2 km
Hillarys4.4 km
Whitfords7.7 km

Data coverage

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

Shark observation coverageNONE
SharkSmart WA / DPIRD detections are not machine-connected. No live tagged detections in vShark.
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 coverageLOW
Incident reconstructions are added as frozen validation cases, not a complete history.

NOW / HISTORY — recent assessments

Append-only model outputs. New model versions do not rewrite these rows.

When	Band	Index	Confidence	Model
10 Nov 2026, 3:02 pm	MODERATE	25.1	MODERATE	0.1.0-dev
10 Nov 2026, 11:42 am	MODERATE	25.1	MODERATE	0.1.0-dev
10 Nov 2026, 11:06 am	MODERATE	25.1	MODERATE	0.1.0-dev
9 Nov 2026, 6:49 pm	MODERATE	25.1	MODERATE	0.1.0-dev
9 Nov 2026, 2:02 pm	MODERATE	25.1	MODERATE	0.1.0-dev
9 Nov 2026, 7:53 am	MODERATE	33.4	MODERATE	0.1.0-dev
9 Nov 2026, 4:54 am	MODERATE	33.4	MODERATE	0.1.0-dev
9 Nov 2026, 2:23 am	MODERATE	33.2	MODERATE	0.1.0-dev
8 Nov 2026, 9:29 pm	MODERATE	33.2	MODERATE	0.1.0-dev
8 Nov 2026, 6:54 pm	MODERATE	33.2	MODERATE	0.1.0-dev
8 Nov 2026, 4:57 pm	MODERATE	33.5	MODERATE	0.1.0-dev
8 Nov 2026, 12:24 pm	MODERATE	33.5	MODERATE	0.1.0-dev
8 Nov 2026, 7:15 am	MODERATE	33.3	MODERATE	0.1.0-dev
7 Nov 2026, 5:43 pm	MODERATE	33.3	MODERATE	0.1.0-dev

Evidence hierarchy

Direct recent detection — Tagged receiver, verified instrument detection, or equivalent in the relevant window.
Verified sighting — Sighting confirmed by a responsible authority or trained observer.
Multiple corroborated observations — Independent reports that agree in space and time.
Strong ecological proxy — Prey aggregation, carcass, or similar with documented association — still a proxy.
Environmental habitat suitability — Temperature, depth, and similar suitability — not presence.
Historical seasonal association — Climatology / phenology prior. Not a live observation.
Long-term background prevalence — Baseline occurrence in the region. Weakest for now-casting.

Methodology

Relative interaction risk, not attack probability. Official advice outranks this page. Methodology · Data sources