Glacier Reef, the Most Beautiful Place in the World

As they dove deeper, the two guard hydras were joined by others. A small handful of hydras passed them to assume the now-empty patrol positions near the trench's entrance while four more one-headed hydras created a perimeter around Lunara. With two at the front, one on each side, and two at the back, the hydras made sure to show their strength in numbers and force Lunara's cooperation. 

'Why so many?' Jack asked Lunara.

Lunara sighed, 'Because someone threatened to make heads roll…'

'Oh… I guess that's a fitting reason…' Jack scratched his head and went silent.

They rushed through the cold, dark water and no one stopped Jack from emitting his dim light. Rather, Jack had stopped casting the spell of his own accord.