Oddity When Viewing Sonar

[BassQualifier]

Hey guys. I was wondering if any of you could shed some light on something that has intrigued me many times out on the water. I've noticed a couple times when I'm idling the boat over say a point, or either slowly moving through a creek, that on my depth finder, I will see a sort of thin line moving up in a slanted line all the way up to the boat. Like if the depth is 12 feet, I will see a line form at the bottom, then slowly keep building longer and longer until the line finally reaches the boat. What is this? It almost looks like fishing line, but I know it isn't. Could it be a fish that is swimming straight up from underneath the transducer?

It is a really odd sight and I would LOVE to know what this is. It happens quite frequently, probably once every couple outings. Would love to hear your thoughts.

 
Example 1:  (sometimes going down)
+------------------------+
|             \          |
|               \        |
|                 \      |
|                   \    |
| 12ft //\//\//\/\\\/\\\\|
+------------------------+

 
Example 2:  (sometimes going up)
+------------------------+
|            /           |
|          /             |
|        /               |
|      /                 |
| 12ft //\//\///\/\\/\\/\|
+------------------------+

[lizardsrule]

Are you sure it's not the point rising up on the sonar? As in going up shallower? If not, then I haven't a clue, what brand and model do you use?

Lizards

[JRL]

Its your fishing lure. Or atleast that what I attribute it to when it happens to me.

[BassQualifier]

Originally Posted by lizardsrule

Are you sure it's not the point rising up on the sonar? As in going up shallower? If not, then I haven't a clue, what brand and model do you use?

It definitely isn't the bottom contour rising up towards the boat. Nor is it any debris or structure, because I have circled back numerous times to see if I could reproduce it again on screen, but only to find nothing when turning back. I use a Lowrance X-135 depth finder mounted on the bow trolling motor and a Lowrance LMS-520 at the console. I think I have seen it once or twice at the console while sitting in the seat idling through a creek or eating a sandwich, but most of the time I see it happen when I am fishing up front with the trolling motor down.

Originally Posted by JRL

Its your fishing lure. Or atleast that what I attribute it to when it happens to me.

I pretty much only see it when my lure isn't in the water. But it does resemble something to that effect, as if I was reeling something straight up from below the transducer. But the difference is you wouldn't see the fishing line.

[betursweetbass]

I sure can't explain it, but I would consider making an adjustment to the sensitivity settings on your Lowrance, and see if that has something to do with it????

[revrat]

With the line coming up from the bottom, I would say it is bubbles coming up from the lake bottom. I get that a lot on the lake I fish the most on. As for the same line but going down, I have no clue. It is obviously not bubbles if it's going down. Maybe some kind of interference or spurious voltage running around loose in your unit.

[perkdog65]

Turtle....

[zooker]

is the transducer mounted on the outside of the hull or shoot thru??




zooker

[bassintxlady]

well boys...i think it's the portal to the OTHER SIDE!!!!!!.....might be some biguns over there......cross over....go to the light.....

[bassnman30]

Could be some type of incorrect interference in the water. This can be especially true in off colored water. Happens to me alot.

[FlyRod]

It's probably the angry corpse of a murdered mother-in-law. Seems her son-in-law invited her to go nightfishing and then staged an "Accidental drowning, body not recovered" kinda dealio.
I hear that sort of thing is fairly common in Virginia.
Your boat, prop, lower unit, etc, may resemble that of the guilty party and she might mistake you for him then rise out of the water and...Nooooooooooo!
DO NOT FISH THAT AREA AT NIGHT!

Sincerely,

Steven King

[JB]

it had to be the underdeveloped quagmiar that focused its energy to take reb appendix out prior to the full moon...happens all the time rofl

[FlyRod]

Originally Posted by JB

it had to be the underdeveloped quagmiar that focused its energy to take reb appendix out prior to the full moon...happens all the time rofl

Did you mean "Quagmire".



If so, please retype and hit "Search".

Thank you for using MicroFlaccid Explorer.

B. Gates

[JB]

geesh i hope rebs appendix 'twernt near as hornery as glenn Q. lol

[skeeter944]

Rotflmao at uncle fly and jb!

[mymomisbecky]

if you are idleing very slow, it could just be the arc of a fish. mine does the same thing 334c lowrance. slow down your scroll speed and see what happens

[3dkicker]

Originally Posted by FlyRod

"Accidental drowning, body not recovered" kinda dealio. I hear that sort of thing is fairly common in Virginia.

And we are proud of it too!!! C'mon and visit real soon Mr. King.

[Mac1]

I get that on mine too, the slanted line. I'm thinking a bubble does it. Like you observed in one of the posts....it isn't there when you go back. I have a wide angle and as much as I've tried to see it again, it's just not there for the second look.