Roland Deschain observes that they constantly murmur questions: Dad-a-chum? Dum-a-chum? Ded-a-chek? Did-a-chick? Later discovering they are venomous but despite this they are edible which is proven by Eddie. They assume what Roland calls "The Honor Stance" when the waves of the ocean come in. "The Honor Stance" is when they hold their claws up in the air. This stance is held until the waves wash over them. The lobstrosities also appear to be more vicious at night.