Although Callum was also able to breathe underwater, a submersible was waiting for him and Maerin. Since they were unsure of how his body would react to being underwater for long periods, and since the journey would take several weeks.

Callum was nervous yet excited about meeting his father and wondered what he would say to him once they came face-to-face with his father. Until then, he would only think about the long journey ahead.

"Are you ready, Callum?" Maerin asked as he stepped inside the submersible dubbed Titan.

"Yes, I am."

"Good, because there may be some troubles ahead."

"Troubles?"

"Yes, let me tell you about the dangers that lurk beneath the ocean's floor..."

"Okay."