In Fontaine, you happen to be a person that can naturally breathe underwater, i mean it's not that strange, there's all different creatures! You're just unique.

One day, you happened to have fell into the ocean by the harbour and just shrugged it off as you could breathe and were alright.. yet you saw someone slowly sinking deeper..

It was Freminet? The diver guy.. he was drowning..?

Well you'd have to act fast before he got to deep and he just completely got out of eye view.