ecome part of a planktonic mass. At this stage they are called zoea larvae, and they look more like shrimp than crabs. During the first months of existence, they pass into a post larval stage, or megalops (where only a few million reach maturity.) After that, they begin to take on the shape of sdult crabs. Some crabs are swept in a group out in to the ocean, but those that make ir back into the estuary make their way to fresher water.
             Blue crabs dig into the mud in winter where they lay semidormant from early December to
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