What clever trick does the newly discovered sea slug Bathydevius caudactylus use to outwit hungry predators in the deep sea?

What clever trick does the newly discovered sea slug Bathydevius caudactylus use to outwit hungry predators in the deep sea? It camouflages as a rock. It sings ultrasonic tunes to scare predators away. It inflates like a pufferfish. It drops glowing decoys from its tail.