For this trip, i shot with my Nikon D500 in Nauticam housing, using Tokina 10-17mm. Unfortunately i found out that the zooming ring got disengaged at the very beginning of the first time, so i was stuck at... 10mm! Ok not the worst, but to be honest i've done some cropping in Lightroom for some pics, i'll say which ones.
In terms of viz, i think we were OK, i'd say about 3-4 meters on the first dive (max depth 6 meters), whereas more 2-3 meters on the second one (max depth 4 meters).
Note: you can see bigger size photos on our Flickr account (just click on the picture).
First dive:
Slight cropping on this young, playful guy:
NLR_3357.jpg by Nicolas & Léna REMY, sur Flickr
Obviously cropped too, as i thought the sides were not so interesting (though OK-lit):
NLR_3353.jpg by Nicolas & Léna REMY, sur Flickr
This is one of my buddies wearing those white fins that seals liked very much:
NLR_3371.jpg by Nicolas & Léna REMY, sur Flickr
I was happy with following pic, though i can't help noticing the top of the seal isn't fully lit and you can see a greeny cast. However i am not sure anything can be done given the size/shape of the animal (had it lit its top, i would have had greeny shadows below i guess):
https://www.flickr.com/photos/nicolaslenaremy/29897749503/in/album-72157672063848284/
A little bit of highlights correction on the right side for this one:
NLR_3386.jpg by Nicolas & Léna REMY, sur Flickr
What a funny chap! This big seal was snooring on the bottom and rolling left or right depending on the surge:
https://www.flickr.com/photos/nicolaslenaremy/29913888844/in/album-72157672063848284/
At the end of the dive we've been lucky to have the sun back, so i made my way close to the surface (1 meter or something deep), trying to shoot either natural light or with flashs, i did a bit of both. Here the ability to disable the flash with a right-hand finger comes very handy.
So close to the surface:
NLR_3461.jpg by Nicolas & Léna REMY, sur Flickr
And last one for this dive - honesty statement here: it was initially framed horizontally but the sides were empty, so i massively cropped (to make it a vertical). Then it comes handly to have lots of megapixels 
NLR_3488.jpg by Nicolas & Léna REMY, sur Flickr
Looks like my flight is boarding now, so i'll post the second dive photos a bit later!