Coincidentally to other things, we used to catch a few crabs that looked almost exactly like the ones you have in the photo. They were either snow crabs, or a close relative.
We'd only get a few at a time, or a few a day, not enough to establish a fishery. Instead, every night for dinner, besides whatever else was on the menu, was fresh crab salad. Big bowl, full of just ordinary iceberg lettuce, tomato, carrot, sharp cheddar, thickly covered with freshly cooked and shelled crab, then topped with ranch or vinaigrette. Sometimes I'd even open a bottle of good Paso Robles zinfandel, or cabernet.
We'd eat so much we could barely bend over enough to work, the next time we dumped the catch on deck.
Those were the days. It was a good boat to work on!