[But of course Sebastian would see them safe and sound to the surface. He spent some time after they first arrived considering how he has actually never been quite this far beneath the water surface before... but naturally he's certain he'd be able to protect Ciel both from the pressure and the threat of drowning. There is no alternative to that.
All the usual motions, so second-nature by now that their current conversation isn't hindering in the slightest. Sebastian is as meticulous as always, buttoning every button and making sure no ribbon is crooked, even if today there's a more pronounced air of efficiency to it all. Sorry, Ciel, no morning paper and tea in bed today.]
I saw it only briefly, [and in the darkness, as much as that's not much of an issue for someone like Sebastian] but I would estimate its length to about fifty centimetres.
[Once he's made sure Ciel's eyepatch is fastened right and his hair is presentable, Sebastian draws back and rises from his kneeling position. Heading back outside?]
Depending on what additional information Madam Red has to offer, today's breakfast might be a short affair. [Or, you know, nonexistent. Sorry.]