'When will he teach me how to fight?' Lucas thought as these movements and swimming around was already getting into his head.
"That's it," Luu announced, "try it for yourself."
Lucas took a deep breath and followed Luu's example. The sensation of the sinking was new to him. He felt light-headed and dizzy. He lowered his head and focused on his breathing.
"You can do it," Luu encouraged him.
Lucas took another deep breath and held it. He lowered himself until his head was submerged in the water, and he found that he could breathe more easily than before. He waited until he felt confident and then pushed off with his feet.
He pushed them against the sandy bottom, just like Luu had done, and sank gently down. Lucas stopped once he reached the sandy area and stayed there for a while, practising his movements.
