After making sure that Melting Snow was alright after being thrown into the water by the Diamondback Armored Ctenophore, Xinya returned back to his hiding place underneath a piece of overturned bunny-shaped furniture that was attached to the wall. As he crawled underneath it the large sea creature tried it's best to get to him.
Once he was safely hidden, he decided to follow through on the hunch that he had. The hunch would seem quite strange to some, even by his standards he found it odd, but it was the only thing that made sense to him.
When he had noticed that fishing rod was devoid of the bait that he had put on it. He knew for sure that when that giant jellyfish decided it wanted to play with them, it was because lured by the aroma of the bait. He was quite certain that it was the smell that attracted the monster and that's why it was only after him and not the others.