The Innu were happily bobbing in the water of the hot springs, occasionally popping up to talk to the birds while they played in the water, moving back and forth as naturally as any amphibious species would. That was what ended up giving them their first fun new idea for weapons that could target the energy beings.
One of the Innu was about to surface when her friend dunked her head back underwater, making her splutter for a second as she had been expecting to get a lungful of air. It was only one breath, and they had all suffered from a shock transition while playing as kids, but as researchers it gave them an idea.
The layers were a lot like the separation between water and air, each of them was different. However, if they could mess with that boundary, they could directly mess with the energy being's transition between states.