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46,832-acre Great Oyster Bay. Sector 09 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 09 trip-scale surveyed footprint within Great Oyster Bay. A large east-coast bay between Freycinet and the mainland, with beaches, reef points and deep central water. The displayed footprint is not a legal boundary or a claim of complete named-water coverage. The water tops out around 324 ft. The depth chart comes from Geoscience Australia / AusSeabed bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Here is how the season plays out for each species, straight from the data behind the map.
On the chart, Great Oyster Bay - Sector 09 draws 46,835 acres inside 76.5 miles of shoreline. A development index of 2.5 means a maze of bays and points: far more casting targets than a round bowl of the same size. 7% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Call it 14.7 mi long by 8.7 mi wide at the broadest reach. Closest neighbour on DepthScout: Great Oyster Bay - Sector 08, 9 mi west 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 |
|---|---|---|
| sand flathead (Sand Flathead) | official species listing | — |
| black bream (Black Bream) | official species listing | — |
| Australian salmon (Australian Salmon) | official species listing | — |
| silver trevally (Silver Trevally) | official species listing | — |
| gummy shark (Gummy Shark) | official species listing | — |
| yellowtail kingfish (Yellowtail Kingfish) | official species listing | — |
Official species-evidence source.
The spring pattern is a shallow one: sand flathead in 8 to 35 ft. Midsummer fish sit out in 16 to 80 ft before dropping to 8 to 35 ft for winter. The spot to know is Offshore hump, an offshore hump in about 44 ft of water that rates good for sand flathead in summer. Plan around early morning and the evening in the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 35 ft | dawn & dusk | Shoreline point (21 ft) | see map |
| Summer | 16 to 80 ft | dawn & dusk | Offshore hump (44 ft) | see map |
| Fall | 8 to 56 ft | dawn & dusk | Offshore hump (44 ft) | see map |
| Winter | 8 to 35 ft | dawn | Shoreline point (21 ft) | see map |
Come spring, look for black bream tight to the bank in 2 to 16 ft. Expect a summer slide to 7 to 35 ft, then a winter hold in 2 to 16 ft. Start at Offshore hump. It's an offshore hump holding about 31 ft of water and rates good come summer. Prime time lands in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 16 ft | dawn & dusk | open water | see map |
| Summer | 7 to 35 ft | dawn & dusk | Offshore hump (31 ft) | see map |
| Fall | 2 to 25 ft | dawn & dusk | Offshore hump (18 ft) | see map |
| Winter | 2 to 16 ft | dawn | open water | see map |
Spring australian salmon on Great Oyster Bay - Sector 09 hold shallow, usually 4 to 30 ft. They move out to 14 to 80 ft in summer and finish the year down in 4 to 30 ft. Put Shoreline point first on the milk run — a point near 21 ft that grades good for spring. The feeding windows run early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 30 ft | dawn & dusk | Shoreline point (21 ft) | see map |
| Summer | 14 to 80 ft | dawn & dusk | Offshore hump (44 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Offshore hump (44 ft) | see map |
| Winter | 4 to 30 ft | dawn | Shoreline point (21 ft) | see map |
Come spring, look for silver trevally tight to the bank in 4 to 30 ft. Expect a summer slide to 14 to 80 ft, then a winter hold in 18 to 80 ft. Start at Shoreline point. It's a point holding about 21 ft of water and rates good come spring. Prime time lands in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 30 ft | dawn & dusk | Shoreline point (21 ft) | see map |
| Summer | 14 to 80 ft | dawn & dusk | Offshore hump (44 ft) | see map |
| Fall | 4 to 56 ft | dawn & dusk | Offshore hump (44 ft) | see map |
| Winter | 18 to 80 ft | midday | Offshore hump (44 ft) | see map |
Come spring, look for gummy shark tight to the bank in 8 to 40 ft. Expect a summer slide to 18 to 120 ft, then a winter hold in 8 to 40 ft. Start at Sharp break. It's a drop-off holding about 117 ft of water and rates prime come summer. Prime time lands in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 40 ft | dawn & dusk | Shoreline point (21 ft) | see map |
| Summer | 18 to 120 ft | dawn & dusk | Sharp break (117 ft) | see map |
| Fall | 8 to 84 ft | dawn & dusk | Offshore hump (44 ft) | see map |
| Winter | 8 to 40 ft | dawn | Shoreline point (21 ft) | see map |
Spring puts yellowtail kingfish in skinny water — 8 to 45 ft is the zone. As the season builds they drop to 20 to 130 ft, wintering in 27 to 130 ft. Spring yellowtail kingfish concentrate at Shoreline point, a prime-rated point around 21 ft. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 45 ft | dawn & dusk | Shoreline point (21 ft) | see map |
| Summer | 20 to 130 ft | dawn & dusk | Sharp break (117 ft) | see map |
| Fall | 8 to 91 ft | dawn & dusk | Sharp break (116 ft) | see map |
| Winter | 27 to 130 ft | midday | Sharp break (117 ft) | see map |
14 pieces of structure are mapped here — Sharp break, around 154 ft, is the deepest of them.
No facility from the cited Marine and Safety Tasmania boating facilities 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://mast.tas.gov.au/recreational/boating-facilities/
Private land and private launches need the owner's permission — please ask first.
Season dates, license requirements, and size and bag limits for Tasmania waters are set by the Fishing Tasmania (current recreational sea-fishing rules) — and special regulations can apply to Great Oyster Bay - Sector 09 specifically, so confirm the current rules before you fish. Check Fishing Tasmania's live sea-fishing rules and licensing pages before every trip. Current species limits, licences for particular fisheries, seasonal and area closures, marine reserves, protected species, gear controls and biosecurity measures may apply. A directly measured depth footprint, fishing-spot marker or access lead is planning context only and never grants permission to fish, keep catch, enter private or port land, park or launch.
Check the official Tasmania fishing regulations →
Fishing Tasmania species and licence information →
Check special-area and water-specific rules →
Great Oyster Bay - Sector 09 is about 324 ft (99 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 Tasmania Department of Natural Resources and Environment regional evidence informs the sand flathead, black bream, australian salmon, silver trevally, gummy shark, yellowtail kingfish roster for Great Oyster Bay - Sector 09. 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 117 ft of water that rates prime for gummy shark in summer. Every other rated spot, per species and season, is on the map above.
For sand flathead, 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 Great Oyster Bay - Sector 09 is regulated by the Fishing Tasmania (current recreational sea-fishing rules). Check the official Tasmania regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Great Oyster Bay - Sector 08 9 mi · Great Oyster Bay - Sector 05 13 mi · Great Oyster Bay - Sector 06 14 mi · Great Oyster Bay - Sector 11 18 mi · Great Oyster Bay - Sector 10 27 mi · Storm Bay - Sector 04 38 mi · Frederick Henry Bay - Northwest 64 mi · Storm Bay - Sector 06 69 mi · Storm Bay - Sector 11 73 mi · Storm Bay - Sector 10 77 mi · Storm Bay - Sector 14 91 mi · Great Musselroe Bay - West 97 mi
Browse all Tasmania 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.