What are these marks? Lowrance

What are the marks going bottom left to top right?

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   image-18-e1473370496806.jpeg
   

Stupid I phone, just turn your head 90 degrees left

Air bubbles in my experience.

Let’s not rule out individual fish dive bombing your transducer as well. I like that idea better

Could be a bait fish of some type of the bottom?

Haha sorry yes I re-read your question yes I would say air bubbles

I see a bait ball on the bottom with some fish and a few fish up off bottom. The stuff shooting up is air bubbles more then likely.

You didn’t happen to see any dead bait fish surfacing did you?
Lake or River?

I would guess with almost 100% certainty that those are air bubbles. if you were to hover in one spot I would bet the lines are more vertical. I see you were moving slowly, but even that slight speed would result in the lines angling upwards.

CaptainMusky wrote:

I would guess with almost 100% certainty that those are air bubbles. if you were to hover in one spot I would bet the lines are more vertical. I see you were moving slowly, but even that slight speed would result in the lines angling upwards.

So fish farts?

Ha, not exactly. Methane bubbles coming up from the bottom.
You can see bubbles from fish as they expel their air bladder if its lake trout or something. I have heard that anyway, I haven’t seen it myself.

@bigcrappie Flipped this image for ya!

Thanks for flipping, this was Leech lake last weekend.

Heading to Leech at some point next week, I am hoping we can pick up a few fish!

Nick Cox wrote:

Heading to Leech at some point next week, I am hoping we can pick up a few fish!

Let me know how you do. can PM me

bc,
I’ve seen that before, but never when I do are
there bubbles reaching the surface.
I’m thinking they are curious panfish rising in your cone
investigating your boat.
Jack

I make those as fish moving closer and upwards. you don’t mark air with sonar. Or you are moving over fish that are coming up. The bottom thick mark could be a ball of bait (which I doubt) bait usually gets pushed upwards to the top. My guess is its more than a few fish swimming together too close for your sonar to separate each target.

I get the same thing and always wondered what it was. Never seen any bubbles at the surface. Also they are always slanted.

DonG wrote:

you don’t mark air with sonar.

oh yes you can…
http://doctorsonar.com/blogs/educational-articles/12381225-weird-sonar-images-air-bubbles-and-lines-on-sonar