 The depth at which it can live has much to do with what stage of its lifecycle it is in; newly hatched crab (larvae) stay in the shallower waters where food and protection are plentiful.Usually, after the age of two, the crabs move down to depths of and take part in what is known as podding; hundreds of crabs come together in tight, highly concentrated groups.Adult crabs are found usually more than 200 m down on the sand and muddy areas in the substrate.