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9,832-acre Geographe Bay. Sector 05 Australian saltwater fishing map showing only directly measured AusBathyTopo 2026 cells, source-qualified fishing spots, official regional fish evidence, seasonal forage context, access guidance and current-rule links. Sector 05 trip-scale surveyed footprint within Geographe Bay. A broad southwest-facing bay with long sand flats, seagrass, artificial structure and headland transitions. The displayed footprint is not a legal boundary or a claim of complete named-water coverage. The water tops out around 175 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Species by species, here's what the data says the year looks like.
Drawn out, this is 9,832 acres of water rimmed by 22.6 miles of bank. The shoreline is moderately structured (index 1.6) — enough points and pockets to pattern. The shallow band under 15 ft claims about 7% of the surface — that's where the groceries are. End to end it runs roughly 7.7 mi, about 3.1 mi across. Closest neighbour on DepthScout: Geographe Bay - Sector 06, 8 mi east of here.
Regional occurrence does not mean equal abundance, child-specific catch rate, retention permission or a promised catch. Live state, territory, Commonwealth, protected-area and local rules always control. The roster may combine exact-water monitoring with habitat-filtered official regional evidence; it does not imply that every species is equally abundant throughout the mapped section.
| Species | Evidence basis | Count / date |
|---|---|---|
| mulloway (Mulloway) | official species listing | — |
| yellowtail kingfish (Yellowtail Kingfish) | official species listing | — |
| tailor (Tailor) | official species listing | — |
| silver trevally (Silver Trevally) | official species listing | — |
| gummy shark (Gummy Shark) | official species listing | — |
Official species-evidence source.
Spring puts mulloway in skinny water — 5 to 30 ft is the zone. As the season builds they drop to 14 to 100 ft, wintering in 18 to 100 ft. Summer mulloway concentrate at Offshore hump, a good-rated offshore hump around 59 ft. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 30 ft | dawn & dusk | open water | see map |
| Summer | 14 to 100 ft | dawn & dusk | Offshore hump (59 ft) | see map |
| Fall | 5 to 70 ft | dawn & dusk | Offshore hump (59 ft) | see map |
| Winter | 18 to 100 ft | midday | Offshore hump (59 ft) | see map |
The spring pattern is a shallow one: yellowtail kingfish in 8 to 45 ft. As the season builds they drop to 20 to 130 ft, wintering in 27 to 130 ft. Top water on the chart: Sharp break, a drop-off in the 150 ft range, good in summer. Time it for early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 45 ft | dawn & dusk | open water | see map |
| Summer | 20 to 130 ft | dawn & dusk | Sharp break (150 ft) | see map |
| Fall | 8 to 91 ft | dawn & dusk | Offshore hump (59 ft) | see map |
| Winter | 27 to 130 ft | midday | Sharp break (150 ft) | see map |
When the water first warms, tailor slide up into 3 to 25 ft. By summer they slide out to 11 to 65 ft, and by winter most fish are in 15 to 65 ft. If you only fish one area, make it Offshore hump: an offshore hump around 59 ft that scores good in summer. In summer the feeding windows fall in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | open water | see map |
| Summer | 11 to 65 ft | dawn & dusk | Offshore hump (59 ft) | see map |
| Fall | 3 to 46 ft | dawn & dusk | open water | see map |
| Winter | 15 to 65 ft | midday | Offshore hump (59 ft) | see map |
Early season silver trevally use the shallows, holding in 4 to 30 ft. Expect a summer slide to 14 to 80 ft, then a winter hold in 18 to 80 ft. Put Offshore hump first on the milk run — an offshore hump near 59 ft that grades good for summer. In summer the feeding windows fall in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 30 ft | dawn & dusk | open water | see map |
| Summer | 14 to 80 ft | dawn & dusk | Offshore hump (59 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Offshore hump (59 ft) | see map |
| Winter | 18 to 80 ft | midday | Offshore hump (59 ft) | see map |
Early season gummy shark use the shallows, holding in 8 to 40 ft. Expect a summer slide to 18 to 120 ft, then a winter hold in 8 to 40 ft. Put Sharp break first on the milk run — a drop-off near 150 ft that grades good for summer. In summer the feeding windows fall in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 40 ft | dawn & dusk | open water | see map |
| Summer | 18 to 120 ft | dawn & dusk | Sharp break (150 ft) | see map |
| Fall | 8 to 84 ft | dawn & dusk | Offshore hump (59 ft) | see map |
| Winter | 8 to 40 ft | dawn | open water | see map |
Structure-wise the chart holds 6 features, led in depth by Sharp break at roughly 167 ft.
No facility from the cited Western Australia Department of Transport Public Boat Ramps (DOT-033) source was spatially attached within 3 km of this directly measured map footprint during the 2026-09-08 audit. This is an evidence gap, not a claim that public access is absent. Check the official portal, live site signs, tides, ramp condition, vessel suitability, fees, parking, working-port restrictions and landowner permissions before travel: https://catalogue.data.wa.gov.au/dataset/boat-ramps
Private land and private launches need the owner's permission — please ask first.
Season dates, license requirements, and size and bag limits for Western Australia waters are set by the WA DPIRD (current recreational-fishing rules) — and special regulations can apply to Geographe Bay - Sector 05 specifically, so confirm the current rules before you fish. Check WA DPIRD's live regional guide, licences, demersal-management measures, species limits, seasonal and spatial closures, marine parks, protected species and permitted gear before every trip. Species available to target can change by bioregion and date; a regional occurrence record is not an open-season signal. A directly measured contour, fishing spot or access lead never grants fishing, retention, port entry, parking or launching permission.
Check the official Western Australia fishing regulations →
WA DPIRD current recreational-fishing guides →
Check special-area and water-specific rules →
Geographe Bay - Sector 05 is about 175 ft (53 m) deep at its deepest point. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Official coastal monitoring from Western Australia Department of Primary Industries and Regional Development regional evidence informs the mulloway, yellowtail kingfish, tailor, silver trevally, gummy shark roster for Geographe Bay - Sector 05. The mixed roster combines exact-water records where available with habitat-filtered regional evidence; not every species is documented at this exact water, and it is not a promise of equal abundance or a catch on a particular trip.
Sharp break is the top-rated area: a drop-off in about 150 ft of water that rates good for yellowtail kingfish in summer. The interactive chart above rates every spot for each species and season.
For mulloway, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Geographe Bay - Sector 05 is regulated by the WA DPIRD (current recreational-fishing rules). Check the official Western Australia regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Geographe Bay - Sector 06 8 mi · Geographe Bay - Sector 09 13 mi · Geographe Bay - Sector 10 13 mi · Geographe Bay - Sector 11 21 mi · Geographe Bay - Sector 07 25 mi · Geographe Bay - Sector 13 30 mi · Geographe Bay - Sector 03 33 mi · Geographe Bay - Sector 08 33 mi · Geographe Bay - Sector 04 40 mi · Hamelin Bay - Northwest 41 mi · Hamelin Bay - Northeast 51 mi · Hamelin Bay - West 55 mi
See how Geographe Bay - Sector 05 stacks up: best mulloway lakes in Western Australia · best yellowtail kingfish lakes in Western Australia · best tailor lakes in Western Australia · best silver trevally lakes in Western Australia
Browse all Western Australia fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.