The Undine's ploy works to draw them out. Once he's a short distance from the boat they rush out and with the combined effort fo the group they manage to subdue the aggressive creatures.
If there were any survivors, Nini suggested tying them up and presenting them to their new aquatic friends as a gift to show their effort in cementing a partnership. ”These are the ones that survived. To strengthen our bonds of friendship, we leave the decision of what to do with this group to you. They do seem quite aggressive, to be honest,” 14 says, removing his top hat in a grand bow to the aquatic tribe.