The shadow sister descended into the deep, cool waters. Her Bakemonnojutsu gave her free movement in the brine, as it significantly lessened her material density. Water became like air, and though it was cold, part of a ninja's training involved achieving a meditative calm and poise after enduring hours of the gelid downpour of a certain waterfall deep within Japan's wilderness. There was also the 5th gesture of the 9 sacred hand seals which represented complete control of the body's functions. By invoking it, a ninja may withstand extremes that no normal human could fathom.
As if that weren't remarkable enough, the shadow disciple's digital diary also possessed preternatural qualities. The ninja have long been a part of Japan's obscurities. In the old days they served feudal warlords as weather forecasters, star readers, time tellers, fortune readers, spies and assassins. Now they're involved in some of Japan's industries. With their metaphysical understanding of forces, energies and nature, the ninja have knowledge that traditional science, especially western science, has yet to discover. In this, Yei's digital diary could withstand an impressive amount of pressure or energy; and could even phase through matter just as she could. So like the shadow, it remained fully intact and operative.
As she delve deeper, the kagehime held up a closed fist to indicate to those who were not readily able to proceed that they should wait for her report of what lay ahead.
Winding through the maze she came upon the first air pocket at 15 meters from the beginning. The second appeared approximately 30 meters from the first. The maze seemed to go on forever, she noted, as she continued. Air pockets would usually come every 10 to 35 meters and the paths of the enigmatic labyrinth were laden with mines that one would have to carefully weave through.
45 minutes after her perambulation she returned the surface of the entrance where the others were and delivered her report.
"If anyone needs help getting to the other side now's your time to speak up. Once we're in there you boys will most likely have to keep moving if you wanna make it to each air pocket alive. I have some degree of elemental control, if you need fire for warmth I can provide it, but again, let me know before we begin. You won't be able to talk in there unless your lungs are big enough to hold enough air."
(She's probably talking to everyone except SamJaz here :p)