My minecraft pe town Part 2

I finally got around to the 2nd post, this is my underwater house that is close to my main/first house and they are connected by tunnel. Part 1 is here, anyways this continues of the fork that leads to the underground lake in part 1. Yes I will continue with a part 3 eventually as I have finished my mansion 

You are now underwater in a tunnel that leads to my sand castle house which isn't much of a house

But I do have one room which has a small pond and a bed in case I want to sleep with the fishes

The outside of the water house and yes only part of it is underwater