So you want to build on a living creature?

If I was a large creature and someone tried building on me I was take you down quickly to the abyssal plains under the ocean.



Here is your solution that you did not think of, which I guess maybe an exploit but regardless let me teach you how to live here.

So, boat gone, on a Levithan you think you are going to drown. First, jump off, start swimming to the nearest landmass. As soon as you start losing your health from lack of stamina, log out, go into another world. Rest, get full stamina up, go back in the world you are having a problem in and swim some more. Now you repeat this cycle until you are on land. My friends have done this, I have another friend who is afraid of boating so he swam to all other islands using this method.

Good luck.