Ezra's happy for that as well, sitting back for a few minutes and listening to the happiness around him as he was. He doesn't mind the silence, even if it's awkward

...until he picks up something sudden and sharp from beneath the docks. A rush of fear, from one of the boys that no one else has noticed.

He sits up - shoots a glance at Spot that does nothing except say he's scared of something - races to the edge of the dock and dives in.