Racnar saw the fishes, there was more than enough, specially for him since he doesn't eat much, but he then saw Sky smiling - "Maybe we can try and catch... a couple more of fishes." - He said that and grinned.
Cayso looked at his brother, noticing that is beginning to get tired, and told him, knowing that could ruin his fun - "Don't over do it Racnar, make it a quick diving."
Racnar looked back at Cayso and nodded, he turned at Sky - "So, we make it a quick diving then Sky?" - after that, he smiled and took a deep breathe, returning underwater.