Not quite life & death, but I once used my Delica to free a seagull caught in heavy monofilament line at the local fishing pier.
Sure enough, it pecked me as soon as it got the chance. <img src="smile.gif" width=15 height=15 align=middle>
On a more serious note:
I've been an avid scuba diver for just over 14 years. Being big on the "always be prepared" bandwagon, I always carry my dive knife whenever I go diving. (Unfortunately, not a Spyderco) During last year's lobster season, my brother-in-law and I were night diving on a 700ft. jetty just off the Treasure Coast area.
We were at the very end of the jetty in about 32ft. of water. We were winding down the night and had gone through two tanks worth of diving and at the tail end of our third. As luck would have it, my partner found "The BIG One" at the bottom of the jetty marker bouy. Must have been 4-5lbs!
Anyway, as he worked the lobster around the far side of the buoy, his left fin became entangled in what looked like trolling wire. I was no more than 10ft. away from him when this happened, and sure enough, his air ran out in his tank while he was struggling to get loose. I swam over to him and it seemed like an eternity to get there. The bottom currents had picked up on an outgoing tide. I had a few ticks of air left and handed him my spare regulator. I went to work on the trolling wire but the dive knife didn't have very good serrations to cut through it. (No Spydie edge!) In all, it took about two minutes to eventually saw through all that wire. It felt like two hours! We had just enough air to make a quick decompression stop, and end the night with our two bags of lobster. Unfortunately, "The Big One" got away... <img src="sad.gif" width=15 height=15 align=middle>
That brings up a good point. Ryan, any plans on a Spydie dive knife? <img src="smile.gif" width=15 height=15 align=middle> Although dive knives are more of a specialized market, I am not aware of any "big players" in that market with a quality product. Maybe Spyderco could corner the market with a 4mm+ dive knife with a 50/50 SpyderEdge? <img src="wink.gif" width=15 height=15 align=middle>
"Hope for the best. Be prepared for the worst. You'll never be disappointed."