>>619883
Can't crawl with a bullet stuck in your arm/leg, but you can still use your chest/abdominal muscles to roll over. At least that's why I think Abu Hajar and his crew of mighty warriors went rock'n'roll.
>>618739
Pic related works inna-water. Take them out once you get out, and replace them with a fresh pair of dry ones.
>>618096
Getting hit by a harpoon probably sucks a lot more than getting hit by a bullet. Imagine having a metal rod sticking out of your guts, and you can't pull it out because it's barbed, and sea water is seeping into your wound, and blood is mixing with the seawater, essentially blinding you, and any movement makes the harpoon move too, which will cause further pain and injury.
Unless you get hit in a limb (in which case you can tourniquet it), you can only wait for someone else to find you and get you out of combat.
Then they have to get you out of the water to actually treat you, because your blood won't clot under-water, and quick-clot becomes useless too. But what if you were diving too deep to simply swim upwards without experiencing diver's sickness?
Actually, how would /k/ handle under-water first aid? Due to severely limited visibility and weapons range, what sort of tactics would you employ? Looking at how animals do their thing inna-water, I would assume that stealth and very quick and brutal ambushes are the way to go.