4th Graders launched seed boats to try to green the banks of the Gowanus

Sen is taking a photo of boats in the lower right corner.  That is the last he saw of that phone as it fell in the Gowanus shortly after he took this picture.  What other artifacts does the camera join?

Matt near the edge of what looks a lot like water...but is the Gowanus...

Green roof and bioswale models from 2011