Two-and-a-half hours after taking a deep breath and diving, Luna was stuck with the thought that she might, in fact, be lost; the derpfish that had been guiding her all this time mustve forgotten the route again. That and she should have met the Sea Ponies, conversed with them via sign-language and glubbing-speech, and left for the surface forty-five minutes ago; the strain was really starting to show!
But no; as the Princess of the Night, and chosen Equestrian Ambassador, its her royal duty to attend that underwater meeting, no matter how desperately she may desire air. Thats one of the upsides to being darn-near immortal.
(Bonus derpfish-less edit available on our Tumblr page)