This is when a layer is made up of very, very cold water droplets, and in one region they start to freeze, and this freezing sets off a chain reaction which spreads outwards with the ice crystals cascading and falling down below, giving the appearance of jellyfish tendrils down below.
ある空気層が非常に冷たい水滴からなり ある部分で凍結しはじめると 連鎖反応が周りに広がっていきます 氷の結晶は滝のように落下し クラゲが触手を垂らしたように見えます