Getting into a water. It should be fine, he did swim every summer. But he had never stayed in it more than 2-3 minutes. And although he was quite good at easy charms, he wasn't very sure about this bubbling head thing. Maybe he should stay on land... but glancing over the Slytherin group, he decided to get in. Besides, their prefect would be with them all the time, right? And the professor would watch it... the only problem was that, his clothes would get wet. Sigh... he hoped he wouldn't get sick after that.

Making his way to the Slytherin group, he smiled. "Hello. I'm Evan." he greeted, realising that he hadn't met any of them before officially. He didn't know any of their names. He should be more social. After listening to what the prefect was suggesting, he nodded to show that he agreed. Then, he asked to all of them "How can I help?"