Delex

Very little is known about Derukusu. They are fish-like in appearance, sporting long pectoral fins, likely used for attacking, and "swim" through the sand, appearing to aggressively chase hunters in attack. They have, like a Cephalos, the ability to spit out sand. They also appear in the fight with Fenshenlon, jumping onto the boat and attacking hunters.

=Videos=

http://www.youtube.com/watch?v=qEkhUEaWfAE