JOURNAL
What we found out about water, fish, and surf.
Bluefin Tuna and Young Tope Off the Belgian Coast
14 October 2026, 6 min
A technician saw bluefin tuna hunting at the Thorntonbank wind farm, and a survey caught three young tope. Why both left this stretch of the North Sea, why they are coming back, and how a tag follows them.
ReadWhy Height and Period Belong to the Same Wave Train
10 August 2026, 5 min
A mixed North Sea often carries wind chop and a swell train at once. Height in metres and period in seconds only describe a real sea when they belong to the same train.
ReadSea Bass on the Swedish West Coast
22 July 2026, 6 min
European sea bass are ordinary on warmer Atlantic coasts. On the Swedish west coast they arrive as visitors at the edge of the range, so a summer harbour day still starts with whether the fish is even there.
ReadWhy Two Beaches a Few Kilometres Apart Surf Differently
15 July 2026, 7 min
The same swell can line up at one beach and stay soft at the next. Between the buoy and the sand, waves shoal, bend, break on banks, and run through tide and current.
ReadHow Tide Opens the Flemish Banks
9 July 2026, 6 min
On the western Belgian sandbanks, outer crests can take the swell at low water. Rising tide puts water over those crests and can turn the same sea into a session.
ReadWhy Atlantic Salmon Enter the River
8 July 2026, 6 min
Adult Atlantic salmon leave the sea and run the river to spawn. They will still take a fly on that journey, because the strike remains even when the day's work is the run.
ReadWhere Coldwater Fish Hold in July
3 July 2026, 6 min
In many northern lakes, July surface water sits near 18 °C. Vendace still prefer about 6 to 12 °C, so they gather in the cool band below, on the thermocline or a cold inflow.
ReadWhat a Wave Buoy Can See
12 May 2026, 6 min
A wave buoy records height, period, and direction in the water it sits in. The rideable face is made in the last shallow stretch, where sandbars, harbour walls, and tide finish the job.
ReadHow a Swell Pulse Crosses the North Sea
6 May 2026, 5 min
Wave energy travels in groups, and longer-period waves outrun shorter ones. By the time a pulse reaches a Dutch or Belgian beach, it arrives as a span of hours, not a single clock time.
ReadTurbidity Changes How Fish Hunt
6 May 2026, 6 min
Suspended silt and algae shorten how far a pike can see. Rain on clay, wind on a shallow lake, and a bloom each stain the water on a different clock, and colour itself fades with depth.
ReadHow Tide Changes a Sandbar
6 May 2026, 4 min
A tide table times the rise and fall. On Belgian and Dutch beaches the surf depends on how that changing depth sits on a named sandbar and an outer bank.
ReadHow Moon, Tide and Light Overlap
6 May 2026, 6 min
The Moon pulls the sea, lights the night, and traces a path overhead. Those are three different jobs, and they overlap on some nights more than others.
ReadOxygen and Light Under Ice
6 May 2026, 7 min
A lid of ice seals a lake from the air. Snow on that lid cuts the light. Fish then live in a thinning budget of oxygen and a dimmer day, and they move to where both still work.
ReadHow to Read a Wind Diagram for North Sea Surfing
6 May 2026, 5 min
A 270° wind is a westerly. On a Belgian beach that faces north-northwest, that same wind is slightly cross-shore. The diagram only becomes a surf tool once the coastline is in the picture.
ReadHow a Lake and a Coast Ask Different Questions
6 May 2026, 5 min
A summer lake splits into warm and cool layers. A coast moves bait with the tide. Each process sets a different question for the same afternoon.
ReadHow Dogger Bank Changes Incoming Swell
6 May 2026, 4 min
Dogger Bank is a huge shallow area in the central North Sea. For some swell directions and periods it slows, bends, and weakens energy before that energy reaches Belgium or the Netherlands.
ReadWhat a Falling Glass Does to the Water
6 May 2026, 6 min
A falling barometer is a messenger. The front behind it changes wind, light, temperature, and runoff, and those are the changes fish meet in the water.
ReadWhen a Cycle Log Leaves the Phone
5 May 2026, 6 min
A cycle log can sit only on a locked phone. It leaves the handset when a network request carries a copy, or when that copy lands on a company machine. Airplane mode is a simple way to watch the difference.
ReadHow Tide Moves Bait and Hunting Ground
4 May 2026, 6 min
Twice a day the sea rearranges food, mixing, and the ground you can actually fish. Light, temperature, and whether bait is there decide how that moving water fishes.
ReadNorth Sea Water Temperature by Month for Surfers
3 May 2026, 6 min
Southern North Sea water runs about 5 to 7 °C in January and often peaks in August. Air warms and cools first. The water lags, which is why March can feel like a trick and September can still feel mild.
ReadWhat Moves a Day's Water Need
2 May 2026, 6 min
A day's water need is water in against water out. Heat, exercise, and salt move the total. A luteal temperature rise of 0.3 to 0.5 °C sits in a smaller place on the same ledger.
ReadWhat Actually Sets a Burn Time
15 April 2026, 6 min
Burn time is set by UV dose, the index, skin type, and shade. SPF measures how much of that dose the cream holds back. A luteal shift in the skin barrier sits in a smaller place next to noon at index 8.
ReadHow Lakes Layer in Summer
14 April 2026, 7 min
When the surface warms, many lakes split into a mixed top, a cold deep, and a thin band between them. Fish live in the slice of that column that is still cool enough and oxygenated enough to use.
ReadWhy Empty Days Belong in the Log
22 January 2026, 6 min
An empty day still records the water. Rain can lift clay into a river, cut how far a pike can see, and shut a sight-feeder down before the first cast.
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