Hernando breaks the surface right next to the end of the pier, it's dark as hell here in the shadows cast by the lights on the pier above. The top of the pier is about 2-3m above water level. Apparently being underwater was good for one thing, his night vision hasn't been impaired by light so he can sort of make out larger objects by the degree of dark/shadow.
Looking around he sees what's probably those scrap vehicles on the corner of the pier to his left and ... wait ... did something move?
There's something clinging to the end of the pier about half way up, what it's hanging onto he doesn't have a clue as all he saw below the water was barnacles and seaweed, and the part above water looks pretty smooth. But there's definitely a dark form silhouetted against the sky (if you looked down from above you probably wouldn't see a thing against the background of the water below) very slowly making it's way up the end of the pier.
And now Hernando will ... ?