Yes, it is a net.
Not that I like it there but,one summer day an egret wiped us out
. I came home and found a goldie flapping in the dirt. :'(Its whole body mutilated ,chewed up on one side . I quickly rubbed stress coat on it and put him back in the pond. it healed beautifully and not a mark was left on it.
He got a break that day . Unfortunatly ,all the koi were gone and some happy egret got dinner that night.