Both of the females that have him smile back, just as sweetly and also hungrily. One pulls him into an embrace as the other grabs him around the waist to bring him to her. They start tugging on him back and forth between them, both claiming him and unwilling to share.
The male darts between him and the red haired female, jealous of the attention. They ignore this as they fight over their plaything and meal. Not long into the tug of war the females become more aggressive. One hisses and strikes at the other who wont let go of Jack's waist. All at once they go for each other's throat. The water becomes a roar and their shapes lost in bubbles as they attack each other viciously. selfish and jealous creatures, they refuse to share the prize, letting him go in order to bleed the other in their brawl.
The male shoots past Jack again and again, knocking him roughly under the water, playing with him and trying to drown him slowly. He loses interest in it soon enough, having no intention of eating Jack just hurting him. Eventually he swims back to the fighting swarm of the two females, hissing and striking at them both for ignoring him.