This is the egg mass. Its outer surface hardens after coming in contact with the air; this seals the moisture inside. Ten days later, tiny tadpoles appear. After the next downpour, the tadpoles swim with the current to a puddle or pond to begin the next phase of their life.
泡沫外層和空氣接觸會變硬，使內部水分不易發散，保持一定濕度，以保護蛙卵，蛙卵十天後孵化成小蝌蚪，繼續利用泡沫中的水分維持生命，等到下雨時，雨水將泡沫沖散，小蝌蚪就隨著水流到池塘、水窪裡，開始另一個生涯。