What is Malachi?

Even if a roach were to run directly at Malachi in the middle of a filled concert venue, he would still be able to notice it and react accordingly. 

His senses were just that well developed after becoming his mother's avatar. 

And since Anna regularly ingested his essence and acclimated it into her body, her senses were almost as sharp as his. 

So then why hadn't either of them noticed the sea creature coming until it was almost too late?

Malachi pulled in Anna by the waist and together the two avoided a well timed bite that was aimed at them by one of the creature's three heads. 

Finally, Mal seemed to notice just what was wrong with this creature and the reason why he didn't notice it, but it was pretty hard to believe. 

And even if that was the case for him, it didn't explain why Anna couldn't sense it. 

"Hey babe... did you notice anything weird about that thing's attack just now?" He asked.