Warm-water tongue wraps the east wall — yellowfin steady, marlin still scattered

Last week the canyon did what it does in early July when the Stream cooperates — it pushed a warm filament up over the edge and let it wrap around the east wall like a hand around a coffee cup. Inshore of the 60-fathom curve the water held in the mid-60s, cool and green, still carrying some of that spring chill off the shelf. But out along the 100 to 250 line, especially up toward the northern lobe where Washington starts to bleed into Baltimore Canyon territory, we had a tongue of 71 to 74 degree blue water rolling through. That's the kind of break that gets everybody's attention out of Ocean City and Indian River both. The moon's swinging into last quarter by the 6th, so the tide push at the canyon edge — which matters more for current direction over the drop than for height — has been easing off big swings and settling into a calmer rhythm. That calm window is exactly when the eddy has a chance to hold its shape instead of getting torn apart by a hard flood or ebb, and that's part of why the temp break has stuck around longer than I expected for the first week of July.

This week I'm watching two things: whether that warm filament stays wrapped on the east wall or slides north the way these things tend to do once the Stream shifts its meander, and whether the wind — forecast out of the southwest most of the week, building a little Thursday into Friday — lets boats actually get out to fish it properly. A blow out of the southwest over a warm filament like this can actually help, pushing surface water and bait against the wall instead of scattering it, but it makes for a sloppy ride getting there. If you're running from the Delaware or Virginia side, I'd plan on a bumpy four hours each way and factor that into when you leave the dock.

On the fish: yellowfin have been the most reliable player, and I mean reliable in a canyon-fishing sense, not a bay-fishing sense. Boats working the 100-fathom curve up near the northern edge, roughly where Washington starts handing off to Baltimore, have had multiple-fish mornings trolling a spread of Green Machines and small Ilanders behind the temp break at first light, then switching over to chunking bunker and butterfish once the sun gets up and the fish stop chasing hardware. Fish have run 20 to 40 pounds, with a few pushing into the 50s mixed in — solid grade for the first week of the season, not a stacked bite but a real one. The pattern has been first-light and last-light windows, which lines up with where we are in the moon cycle right now; with the moon swinging toward last quarter, the strongest feeding windows have shifted toward dawn and dusk rather than the overnight bite you sometimes get around the full.

Wahoo have been a bonus fish, not a target yet. A few have come on high-speed trolled Ilanders and cedar plugs pulled fast — 12 to 14 knots — right on the edge of that warm tongue where it meets the cooler resident water, which is usually where wahoo like to sit and ambush. But it's been one or two fish a trip, not a pattern you can plan a whole day around. If the filament holds and warms another degree or two, that could change quickly — wahoo show up fast once the water's right, and right now it's close but not quite locked in.

White marlin are around but scattered, which is honest early-season behavior. A few boats working ballyhoo naked and skirted, pulled slow along the color change on the east wall, have had one or two bites a day, sometimes going all morning without a sniff and then getting three shots in twenty minutes when a pod of fish moves through. That's typical for the first week of July out here — the marlin haven't fully set up on the structure yet, they're still filtering through with the current. I wouldn't call it a marlin bite yet. I'd call it a preview.

Mahi have been mixed in around whatever floating structure you can find — lobster pot balls, weed lines, the occasional bit of debris pushed offshore by the southwest wind. Small stuff mostly, schoolies in the 3 to 8 pound range, but they'll eat almost anything you throw at them: bucktails, small swimming plugs, even bare hooks with a strip of squid. Good action if you find a decent weed line, but you have to find it first, and this week's wind is going to keep breaking up whatever weed accumulates.

Bigeye have been quiet, which isn't unusual this early — that's more of a late-July into August fish out here once the water fully stacks up and the deeper eddies mature. I haven't heard of a serious bigeye bite yet this season and I'm not expecting one for another couple weeks.

If I had a boat and one day this week, I'd run for that northern lobe of Washington first thing, troll the temp break at dawn while the wind's still manageable, and have chunk baits rigged and ready the moment the trolling bite slows. If that filament has slid north by the time you get there, I'd drop south toward the main body of the canyon and work the 60 to 80 fathom curve instead — the resident yellowfin down there have been eating too, just with less fanfare. Either way, get there early. The window before the southwest wind builds Thursday is the best-looking stretch on the calendar right now.