My on going salt steel comparison journal

[Chinstrap]

Thanks for the good vibes, and useful insight regarding good blade maintenance; I'll be sure to source the recommended 'waxy' compounds when I get home.
A few days ago, my team and I were pressed into the dive system. The first dive was very muddy (and poor visibility) and I spent a lot of time digging around the seabed, derigging and rigging assorted equipment.
As per usual, we sent our suits and boots out, and hung up our personal tools in the transfer chamber. The next dive was a day later and I had a chance to inspect my knives. The H2 blade exhibited some very mild iron oxide (assumption) residue, as seen in the attached photo. It is fairly easily removed with a 3M 'Scotchbrite' pad.
From my own limited understanding of knifemaking however, it would seem likely as previously posited that this has all been a result of the grinding process of serration manufacture.
Thanks again all, for your support and valuable information.
And I look forward to frequenting this forum for more; stay salty!

Sincerely,
Christian