In the second season opener, the series develops a more supernatural/weird tone as Mitch and Griff investigate a sunken freighter where they fight for their lives against an unknown force and realize that the freighter might have been sunk by a New Guinea sea monster according to a woman they found floating in the ocean near sunken wreckage of her sailboat. Written by
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Alright, Griff, run an O2 check, see if you've got any oxygen in there at all.
Okay, good idea. Gonna want to check out this way.
[waving around a gadget
Alright, I got fifty parts per mil nitrogen. There's a whole bunch of carbon dioxide from everything rotting. Looks like the oxygen's from all the kelp growing.
I don't wanna study it. Just breathe it.
Okay. Be my guest.