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Rarely. You really have to go major in this case, especially if you are wearing Jet fins, which plummet like rocks.I find some minor curse words helps.
If it happens at a location with a 100' bottom, you cuss a lot and then go buy a pair of fins with spring straps.
But what if I'd been on a boat dive at 100 feet? What happens then?
When I learned to dive in the military you never held your fins or mask in your hands. You would insert your hands into the straps (one per arm)... If you do this when entering or exiting the beach or vessel you can never lose them.