Poe just bowed to the professor with a smile. He took some gillyweed and went to the lake. ''Hmmm... what to do with the clothes?'', he said to himself. ''Accio Swimsuit''[/i], he said. Soon, in front of him, landed his swimsuit. He packed that in his bag and, incidentally, had not packed it back this morning because he rushed to class. He took the gillyweed. Dreadful taste. The jumped into the water and swam a little. He did not go to deep because he knew that there are all sorts of beasts in the Lake. He knew that the effect lasted about an hour so he knew when to get out. He was actually quite bored under water. Nothing to do, just swim for an hour. While swimming a little deeper, he thought he saw a Merperson, which is why he returned to the surface. He had his wand with him, but since professor Adeagbo did not say he had to fight Merpeople, he did not want to trouble himself.
Soon, the effect of Gillyweed began to wear off and Arthur exited the lake. Now, he needed to do the same with the Bubble-head charm. He still wondered why. It was not an easy spell, but Arthur had not trouble mastering it. A bubble appeared around his head and he went into water. He stayed there for about 20 minutes. He was done. He did not have the nerves to stay there anymore. He dried himself, put his clothes on and returned to the Greenhouse.
He entered an bowed slightly. ''Professor, I have completed the assignment. Although the water was very good, I still do not understand why I had to take a swim.'', he said as he took his seat.