bobbing

A bright blue horizontal band in an urban landscape is dotted with calmly bobbing heads.

Blue and white ribbons and streamers have been stretched high across the streets of the shopping district and, in the old port, bunting flutters from the boats bobbing in the Mediterranean.

I stared at Noah’s bobbing Adam’s apple as he suckled at his bottle.

Billy is often seen bobbing, pacing and swaying — all signs of brain damage caused by years of captivity, the organization said.

Attached to wires, it's bobbing over a sea of silver balloons designed to look like waves.