Kun :
Once he saw that you were scared he was getting a bit scared but he still caught you and tried to calm you down. If he could talk you into getting back down in the water he'd still make sure to be holding your hand. If you didn't want to he'd be more than happy to hold onto you, that is until his arms start to hurt.
Jaehyun :
He'd kinda laugh a little about how you were so scared that you literally jumped in his arms. Since he's that amazing boyfriend material he'd hold onto you for awhile making sure you would be okay and would tell you to not be afraid and that if anything happened he'd be right there.
Taeyong :
This poor man hardly caught you in time but he did. He'd stumble though and you're lucky that you both didn't fall in. Although you were scared he can't help but smile know that you wanted him to protect you. Also the look on your face was priceless.
Lucas :
Super Lucas to the rescue. He'd catch you with no problem and if you were still going to be scared he'd put you up on his shoulders or give you a piggy back ride back to shore so he could go and get you some ice cream to make you feel better.
