Main Mangrove Tree

This idea is that in the center of some large Mangrove Swamps there will be a much larger(Maybe around as tall as a jungle tree) Mangrove tree that stands, spreading its roots across the swamp. Maybe you could also make the main body of the tree a couple of blocks above water as to make it possible to boat under it.

I feel as if the sheer size of the tree will add more of an atmosphere to the area and really but into scale how large the minecraft world can be.

They would also only be able to generate one per Mangrove Swamp and not be grown using saplings.