Does anyone have a screen shot of the 2?

I’m seeing what appears to be sparse hydrilla on my screen as I’m fishing near some thick stuff but some of it may be brush piles mixed in. 8’ of water. 
 This is a garmin unit on down scan. 

I failed to get a picture but will next trip out. 

I have some of trees but it’ll take a bit to find them 

Thanks TnR, the top looks like some of what I am seeing but with a lot more smaller “limbs”, which might just be the hydrilla stalks. 
The second is what I see in the St. John’s river which is definitely trees.