Creating a big bang
The reason why most of them had glanced at each other was that they thought that seeing the first Dalki was the sign for their little competition to start. They all looked at the Dalki like it was some prey, and at the same time, when it saw them, it opened its mouth wide, as if it was ready to attack.
The Dalki aren't the type of beings to run away in the first place, and it wasn't as if they knew or bothered learning the faces of the humans that they needed to be scared of.
"The first one's mine!" Peter shouted, almost charging forward but before anyone else had moved. There was already someone faster than him and had punched Dalki in the chest. The fist pushed through the Dalki's chest, and it died without knowing what had hit him.