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111,285-acre Sejerø Bay. Sejerø Island Denmark saltwater fishing map with official Danish Geodata Agency 50 m bathymetry, measured-only fishing spots, DTU-supported fish targets, seasonal forage guidance and public shore-access context. Sejerø Bay. Sejerø Island. Western Sejerø Bay around the island approaches, with exposed points, banks and Kattegat exchange. The water tops out around 192 ft. The depth chart comes from Danish Geodata Agency 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 outline encloses 111,522 acres, worked by 65.1 miles of shoreline. The basin is a simple one (shoreline index 1.4) — close to a bowl, so the structure on the chart matters more than the bank. The shallow band under 15 ft claims about 1% of the surface — that's where the groceries are. The basin spans about 23.5 mi end to end and 18.4 mi across at its widest. If the bite dies, Sejerø Bay - Samsø Side is 8 mi to the west.
The target roster combines the named DTU monitoring area with conservative habitat-compatible Danish regional records. It documents observed or regionally supported occurrence, not equal abundance, a catch rate, or a promised catch in this child. European eel is omitted because recreational eel fishing is currently closed. 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 |
|---|---|---|
| Havørred (Sea Trout) | official species listing | — |
| Sild (Atlantic Herring) | official species listing | — |
| Skrubbe (European Flounder) | official species listing | — |
| Hornfisk (Garfish) | official species listing | — |
| Rødspætte (European Plaice) | official species listing | — |
| Hvilling (Whiting) | official species listing | — |
| Makrel (Atlantic Mackerel) | official species listing | — |
| Tunge (Common Sole) | official species listing | — |
| Tyklæbet multe (Thick-lipped Grey Mullet) | official species listing | — |
| Slethvar (Brill) | official species listing | — |
| Sej (Saithe (Coalfish)) | official species listing | — |
Official species-evidence source.
Early season sea trout use the shallows, holding in 3 to 20 ft. Summer is a 15 to 50 ft game here, winter a 5 to 30 ft one. Best bite is early morning and the evening. Tie on a deep-running wobbler or a trolled spoon and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 20 ft | dawn & dusk | open water | Slim coastal spoon, Shallow-running wobbler |
| Summer | 15 to 50 ft | dawn & dusk | open water | Deep-running wobbler, Trolled spoon |
| Fall | 3 to 25 ft | dawn & dusk | open water | Coastal wobbler, Casting spoon |
| Winter | 5 to 30 ft | midday | open water | Slow coastal spoon, Suspending wobbler |
Spring atlantic herring on Sejerø Bay - Sejerø Island hold shallow, usually 5 to 25 ft. By summer they slide out to 15 to 50 ft, and by winter most fish are in 20 to 60 ft. Prime time lands in early morning and the evening. The summer box starts with a herring feather rig or a small silver jig.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | open water | Small herring feather rig, Micro jig rig |
| Summer | 15 to 50 ft | dawn & dusk | open water | Herring feather rig, Small silver jig |
| Fall | 10 to 40 ft | dawn & dusk | open water | Small feather rig, Compact silver spoon |
| Winter | 20 to 60 ft | midday | open water | Small silver jig, Sparse feather rig |
Spring puts european flounder in skinny water — 5 to 25 ft is the zone. As the season builds they drop to 6 to 35 ft, wintering in 15 to 50 ft. Fall european flounder concentrate at Feeding flat, a good-rated feeding flat around 43 ft. Warm-month bites cluster around early morning and the evening. A bottom jig with spinner blade covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dusk | open water | Small bucktail dragged on bottom |
| Summer | 6 to 35 ft | dawn & dusk | Feeding flat (43 ft) | Bottom jig with spinner blade |
| Fall | 8 to 40 ft | dusk | Feeding flat (43 ft) | Compact bottom jig |
| Winter | 15 to 50 ft | midday | Feeding flat (43 ft) | Small bottom jig |
Early season garfish use the shallows, holding in 1 to 15 ft. Summer is a 2 to 20 ft game here, winter a 20 to 60 ft one. Best bite is early morning and the evening. Tie on a slim casting spoon or a surface-skipping fly and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 15 ft | dawn & midday | open water | Slim silver spoon, Small inline spinner |
| Summer | 2 to 20 ft | dawn & dusk | open water | Slim casting spoon, Surface-skipping fly |
| Fall | 8 to 30 ft | dawn & dusk | open water | Weighted slim spoon, Small silver jig |
| Winter | 20 to 60 ft | midday | open water |
Come spring, look for european plaice tight to the bank in 8 to 35 ft. Expect a summer slide to 6 to 40 ft, then a winter hold in 25 to 80 ft. Start at Feeding flat. It's a feeding flat holding about 43 ft of water and rates good come summer. Prime time lands in early morning and the evening. A light spooned bottom rig or a beaded trace is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 35 ft | dusk | Feeding flat (43 ft) | Beaded flowing trace |
| Summer | 6 to 40 ft | dawn & dusk | Feeding flat (43 ft) | Light spooned bottom rig, Beaded trace |
| Fall | 10 to 50 ft | dusk | Feeding flat (43 ft) | Beaded bottom trace |
| Winter | 25 to 80 ft | midday | open water |
Come spring, look for whiting tight to the bank in 15 to 55 ft. Expect a summer slide to 20 to 70 ft, then a winter hold in 15 to 70 ft. Prime time lands in early morning. A small vertical jig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 55 ft | dawn & dusk | open water | Small silver jig, Two-hook feather rig |
| Summer | 20 to 70 ft | dawn | open water | Small vertical jig |
| Fall | 10 to 60 ft | dusk | open water | Small silver jig, Sparse feather rig |
| Winter | 15 to 70 ft | dusk | open water | Compact vertical jig |
Sejerø Bay - Sejerø Island also holds atlantic mackerel (15 to 80 ft in summer), common sole (3 to 30 ft in summer), thick-lipped grey mullet (1 to 18 ft in summer), brill (6 to 50 ft in summer), saithe (coalfish) (18 to 192 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Structure-wise the chart holds 8 features, led in depth by Deepest basin at roughly 192 ft.
Access data: European Environment Agency — 2025 Bathing Water Directive Sites (Denmark). Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Denmark waters are set by the Danish Agency for Green Transition and Aquatic Environment (current recreational fishing rules) — and special regulations can apply to Sejerø Bay - Sejerø Island specifically, so confirm the current rules before you fish. Most anglers using light hand gear need the applicable Danish angling licence, subject to the official age exemptions. Check live species rules, the mapped and unmapped 500-metre stream-mouth conservation belts, local fishing rights, protected areas and posted shore access before every trip. Recreational European eel fishing is currently prohibited, so eel is not promoted as a target here.
Check the official Denmark fishing regulations →
Danish fishing-licence portal →
Check special-area and water-specific rules →
Sejerø Bay - Sejerø Island is about 192 ft (59 m) deep at its deepest point. The depth chart comes from Danish Geodata Agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Official coastal monitoring from DTU Aqua key-fisher monitoring, 2020–2022 informs the sea trout, atlantic herring, european flounder, garfish, european plaice, whiting, atlantic mackerel, common sole, thick-lipped grey mullet, brill, saithe (coalfish) roster for Sejerø Bay - Sejerø Island. 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.
Feeding flat is the top-rated area: a feeding flat in about 43 ft of water that rates good for european plaice in summer. The map above holds the full rated-spot list for every species and season.
For sea trout, 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 Sejerø Bay - Sejerø Island is regulated by the Danish Agency for Green Transition and Aquatic Environment (current recreational fishing rules). Check the official Denmark regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Sejerø Bay - Samsø Side 8 mi · Sejerø Bay - Middle 8 mi · Ebeltoft Vig 15 mi · Great Belt - Kattegat Approach West 15 mi · Isefjord - Middle 22 mi · Great Belt - Kalundborg West 23 mi · Aarhus Bay - Outer 25 mi · Djursland Coast - Grenaa South 27 mi · Odense Fjord 37 mi · Great Belt - Bridge West 38 mi · Horsens Fjord - Inner Survey Reach 42 mi · Great Belt - Smålandsfarvandet 52 mi
See how Sejerø Bay - Sejerø Island stacks up: best sea trout lakes in Denmark · best atlantic herring lakes in Denmark · best european flounder lakes in Denmark · best garfish lakes in Denmark
Browse all Denmark fishing maps. See every water on DepthScout. Bathymetry credit: Danish Geodata Agency Denmark's Depth Model, 50 m resolution (DKMSL(2022) / mean sea level (EPSG:10547); 94% measured, 6% source-interpolated). 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.