The ponds should be located in a area with free tidal current ,the size of one pond is between 30-300mu(2-20 hectares),water depth is above 1.8-2 m, salinity is above 26 ppt year-round. Easy in and out water circulation is important.
Rocks and concrete are to be applied to strengthen the inner layer of pond wall.
The best substrate of pond bottom would be solid mud-sand or sand-mud, the substrate will affect the growth rate and survival tremendously。
The original prawn ponds usually require some improvements or modifications for the sea cucumber culture purposes including: mud removal, disinfection and reef building.