On the wall, right next to the entrance to the room with the "Break Room" sign there's a terminal, which allows you to perform a Data Buffer.
From here go straight head, and then take a turn to the right - take the pneumatic lock off the doors, open them by pressing the orange button and then get inside. Go to the further section of the room, where a robot on whom you can perform a Data Buffer awaits - it can be easily distinguished by sparks coming from the hanging husk of the machine.
Right next to the Omnitool there's also a note, which explains how the Omnitool works - activate it and then put it down.
In the room, right next to the armchair, there's another terminal - you can read a couple of messages there.
After getting to the tunnel from which you can admire the underwater view, there are four photos on the table on the right side, and on the opposite side of the tunnel there's a Data Buffer terminal.