"Bubble curtains are designed to protect the fish in the area from the noise generated by the hammer impact below the water level," said Walter Reichert, project manager for Tappan Zee Constructors.

Cover — such as weed beds, fallen trees, overhanging vegetation or rocks — offers a safe haven for prey species and a place to hide for ambush predators. As for margins, fish simply love them.

The variation in hunting styles may come from the fact that whales aren't born with the know-how of bubble feeding, Jane J. Lee wrote for National Geographic in 2013. Rather, the dance is learned ...

Inflation of the pond cover is by a 200 watt blower, while cooling during hot weather is done by fans at 0.75 hp per 300 square metres.The bubble structure can cover ponds up to 500 and is ...

Over the three-year study from 2016 to 2018, the team noticed that two whales repeatedly consolidated fish inside bubble nets using their two long, pectoral flippers.