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15,626-acre Geographe Bay. Sector 08 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 08 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 59 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What the data behind the map says about each species, season by season:
The drawn water covers 15,624 acres wrapped in 22.4 miles of bank. The basin is a simple one (shoreline index 1.3) — close to a bowl, so the structure on the chart matters more than the bank. Roughly 15% of the water is 15 ft or less, the band where the food chain lives. Call it 9.1 mi long by 4.5 mi wide at the broadest reach. Its nearest charted neighbour, Geographe Bay - Sector 07, is 9 mi to the southwest.
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 | — |
| King George whiting (King George Whiting) | official species listing | — |
Official species-evidence source.
When the water first warms, mulloway slide up into 5 to 30 ft. By summer they slide out to 8 to 59 ft, and by winter most fish are in 11 to 59 ft. If you only fish one area, make it Deepest basin: a deep basin around 58 ft that scores prime in summer. In summer the feeding windows fall in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 30 ft | dawn & dusk | Sharp break (25 ft) | see map |
| Summer | 8 to 59 ft | dawn & dusk | Deepest basin (58 ft) | see map |
| Fall | 4 to 59 ft | dawn & dusk | Deepest basin (58 ft) | see map |
| Winter | 11 to 59 ft | midday | Deepest basin (58 ft) | see map |
Come spring, look for yellowtail kingfish tight to the bank in 8 to 45 ft. They move out to 9 to 59 ft in summer and finish the year down in 12 to 59 ft. If you only fish one area, make it Shoreline point: a point around 17 ft that scores prime in spring. Best bite is early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 45 ft | dawn & dusk | Shoreline point (17 ft) | see map |
| Summer | 9 to 59 ft | dawn & dusk | Sharp break (25 ft) | see map |
| Fall | 5 to 59 ft | dawn & dusk | Sharp break (25 ft) | see map |
| Winter | 12 to 59 ft | midday | Sharp break (25 ft) | see map |
Start shallow in spring: tailor sit in 3 to 25 ft that time of year. Warm water sends them out to 10 to 59 ft; cold water stacks them in 14 to 59 ft. Top water on the chart: Sharp break, a drop-off in the 25 ft range, prime in summer. Fish it in early morning and the evening and you'll meet the bite.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Shoreline point (17 ft) | see map |
| Summer | 10 to 59 ft | dawn & dusk | Sharp break (25 ft) | see map |
| Fall | 3 to 46 ft | dawn & dusk | Sharp break (25 ft) | see map |
| Winter | 14 to 59 ft | midday | Sharp break (25 ft) | see map |
Start shallow in spring: silver trevally sit in 4 to 30 ft that time of year. Summer pushes them deeper, 10 to 59 ft, and winter fish settle into 13 to 59 ft. The spot to know is Sharp break, a drop-off in about 25 ft of water that rates prime for silver trevally in summer. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 30 ft | dawn & dusk | Shoreline point (17 ft) | see map |
| Summer | 10 to 59 ft | dawn & dusk | Sharp break (25 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Sharp break (25 ft) | see map |
| Winter | 13 to 59 ft | midday | Sharp break (25 ft) | see map |
Start shallow in spring: gummy shark sit in 8 to 40 ft that time of year. Summer pushes them deeper, 9 to 59 ft, and winter fish settle into 8 to 40 ft. The spot to know is Deepest basin, a deep basin in about 58 ft of water that rates prime for gummy shark in summer. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 40 ft | dawn & dusk | Sharp break (25 ft) | see map |
| Summer | 9 to 59 ft | dawn & dusk | Deepest basin (58 ft) | see map |
| Fall | 6 to 59 ft | dawn & dusk | Deepest basin (58 ft) | see map |
| Winter | 8 to 40 ft | dawn | Sharp break (25 ft) | see map |
When the water first warms, king george whiting slide up into 3 to 18 ft. Summer is an 8 to 45 ft game here, winter an 11 to 45 ft one. Start at Sharp break. It's a drop-off holding about 25 ft of water and rates good come summer. The feeding windows run early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 18 ft | dawn & dusk | Shoreline point (17 ft) | see map |
| Summer | 8 to 45 ft | dawn & dusk | Sharp break (25 ft) | see map |
| Fall | 3 to 31 ft | dawn & dusk | Sharp break (25 ft) | see map |
| Winter | 11 to 45 ft | midday | Sharp break (25 ft) | see map |
Geographe Bay - Sector 08 carries 12 mapped structure features, topping out (or rather bottoming out) at Deepest basin, about 58 ft down.
Access data: Western Australia Department of Transport Public Boat Ramps (DOT-033). Confirm conditions and fees locally before you launch.
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 08 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 08 is about 59 ft (18 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, king george whiting roster for Geographe Bay - Sector 08. 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.
Deepest basin is the top-rated area: a deep basin in about 58 ft of water that rates prime for mulloway in summer. Every other rated spot, per species and season, is on the map above.
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 08 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 07 9 mi · Geographe Bay - Sector 03 11 mi · Geographe Bay - Sector 04 11 mi · Geographe Bay - Sector 11 19 mi · Geographe Bay - Sector 10 25 mi · Geographe Bay - Sector 06 27 mi · Geographe Bay - Sector 05 33 mi · Geographe Bay - Sector 09 39 mi · Geographe Bay - Sector 13 53 mi · Hamelin Bay - Northwest 60 mi · Hamelin Bay - West 68 mi · Hamelin Bay - Northeast 69 mi
See how Geographe Bay - Sector 08 stacks up: best mulloway lakes in Western Australia · best yellowtail kingfish lakes in Western Australia · best king george whiting lakes in Western Australia · best tailor 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.