Fish finder images

[Sea Monkey]

Hello,

I have a TZT3 12F with an Airmar B275LHW transducer. I am new to using electronics and need some help dialing the unit in and determining what I see on the screen. For the time being, I am fishing in Southern California next to the islands, typically in water 200' or less.

Can you please tell me what I am looking at in the following images?

Are these fish or kelp stringers along the bottom?



Is this fish along the bottom?


Is this a bait school?


Is this a rock or bait school with bigger fish going through it?


I appreciate any help. Should I change any settings on the unit to get a better reading between 20 and 150 feet of water?

 

[Andrew NZ]

I too would be grateful of any guidance on settings. I have the 16" version of this MFD and the same transducer. (fish a little deeper though)
Using LF in 38 feet of water may get a comment Sea Monkey.
Thanks in advance.

 

[Sea Monkey]

I realized afterward that I had somehow switched back to lf. I thought I had set it to hf at the dock, but that was when the fish finder was on full screen. When it was set to split screen with the chart plotter it was in lf.

Next time I am at the boat, I will fix that.