Mid Sea/Sea Bottom Platform

[Vectorus]

I see what you're saying, but we already have ground platforms, which have no exclusive function either...it does irritate my sense of completeness that mid-sea is the sole remaining "-sphere (hydrosphere)" in which, arbitrarily, we cannot build. As well as the transporter purpose, which is in no way incompatible with also having inter-airport transportation. It can be "both and".