Clams use well-developed axolotl feet to dig for sand and mud and live in burrows. When the tide rises to the surface of the beach, extend the hose for breathing, feeding and defecation. After the tide dries up or when it encounters external stimuli, the bivalve shell closes or relies on the expanding activity of the feet to return to the bottom of the burrow, leaving two holes formed by the water pipes very close to the beach surface.
The depth of a clam's burrow varies with the size of the individual, the composition of the sediment, and the season. When individuals are small, the sediment is soft, or the water is warm, the depth of the burrow is shallow. Larger, harder ones, or in cold winters, dive deeper. In general, however, burrows are usually about 3 to 15 centimeters deep. Clam culture area should be selected in the tidal flow, flat terrain, high sand content of the low-tide area of the beach, or in the water quality and substrate conditions of good ponds, breeding areas should be good transportation, do a good job to stay away from industrial pollution areas. Intertidal aquaculture should turn over the beach and change the land, turn out the silt after tidal scouring and sun exposure, and then leveling, and build embankments to prevent flooding in the areas that are susceptible to tidal scouring and silt coverage, so as to prevent the loss of seedlings. Pond culture, on the other hand, should do a good job of repairing dams and sluices, draining the pond water one month before releasing the seedlings, exposing the substrate, disinfecting it, and filtering it at the outlet for seawater aquaculture.
The choice of aquaculture site should be in a place with convenient transportation and clean water, while ensuring that the aquaculture pond is flat and tidal. In addition, more than 70% sand content should be ensured at the bottom of the pond, i.e. the substrate should be stable. It is generally recommended to build a flood control pond with manzanita grass, 30-40 cm wide and 20-30 cm above the surface of the court, in order to stabilize the surface of the court and prevent the loss of seedlings. Finally, the sea temperature should be adjusted. Clams suitable growth temperature of 15 ℃ ~ 30 ℃, can be used as a basis for adjustment. The first thing you need to do is to get your hands dirty.