30%. The profit margin of raising sea cucumbers in the area is around 30%, that is, if you put in 100 yuan, you can earn 130 yuan, netting a profit of 30 yuan. Sea cucumber, belonging to the sea cucumber class, is living in the sea to 8000 meters of marine echinoderms, more than 600 million years ago, sea cucumbers to the seabed algae and plankton for food.