The organic particles in the soil are also washed by the tides into the nearby sea, where they attract hordes of fish, shrimps, mollusks and crabs to feed and breed. These too provide food for the waterbirds. Vitality in the mud
位在河口的溼地更勝一籌，因為土壤中的有機碎屑還會隨著潮汐流到附近海域，引來大量魚蝦、貝蟹覓食繁殖，又成為水鳥的另一批食物。