They build little dikes above the hole, often several meters in length, which not only cordon off the neighbors, but also prevent the water from rapidly receding and drying up.
它也會在坑的外圍築上低矮的泥堤，長達數公尺，如此不但與鄰居有了「楚河漢界」，也可以預防海水迅速消退後泥坑過於乾涸。